Package 'NetLogoR'

Description

The suggested package fastshp can be installed with install.packages("fastshp", repos = "https://rforge.net", type = "source"). The examples included with the package, are located in the R package "examples" folder, which can be found at system.file(package = "NetLogoR", "examples").

Details

The 3 specific R examples can be opened here, but it's recommended to make copies of these for editing:

exPath <- file.path(system.file(package = "NetLogoR", "examples")
file.edit(exPath, "Ants", "Ants.R"))
file.edit(exPath, "Butterfly", "Butterfly-1.R"))
file.edit(exPath, "Wolf-Sheep-Predation", "Wolf-Sheep-Predation.R"))

Author(s)

Maintainer: Eliot J B McIntire [email protected] (ORCID)

Authors:

• Sarah Bauduin [email protected] (ORCID)

• Alex M Chubaty [email protected] (ORCID)

Other contributors:

• His Majesty the King in Right of Canada, as represented by the Minister of Natural Resources Canada [copyright holder]

See Also

Useful links:

• https://netlogor.predictiveecology.org

• https://github.com/PredictiveEcology/NetLogoR/

• https://groups.google.com/g/netlogor

• Report bugs at https://github.com/PredictiveEcology/NetLogoR/issues

Description

.bboxCoords is a drop in replacement for raster::.bboxCoords.

Usage

.bboxCoords(coords)

Arguments

Description

Operators acting on vectors, matrices, arrays and lists to extract or replace parts.

Usage

## S4 method for signature 'worldMatrix,numeric,numeric,ANY'
x[i, j, ..., drop = TRUE]

## S4 method for signature 'worldMatrix,missing,missing,ANY'
x[i, j, ..., drop = TRUE]

## S4 replacement method for signature 'worldMatrix,numeric,numeric,ANY'
x[i, j] <- value

## S4 replacement method for signature 'worldMatrix,missing,missing,ANY'
x[i, j] <- value

## S4 method for signature 'worldArray,numeric,numeric,ANY'
x[i, j, ..., drop = TRUE]

## S4 method for signature 'worldArray,missing,missing,ANY'
x[i, j, ..., drop = TRUE]

## S4 replacement method for signature 'worldArray,numeric,numeric,matrix'
x[i, j] <- value

## S4 replacement method for signature 'worldArray,missing,missing,matrix'
x[i, j] <- value

## S4 method for signature 'agentMatrix,numeric,numeric,ANY'
x[i, j, ..., drop = FALSE]

## S4 method for signature 'agentMatrix,logical,missing,ANY'
x[i, j, ..., drop = TRUE]

## S4 method for signature 'agentMatrix,numeric,missing,ANY'
x[i, j, ..., drop = TRUE]

## S4 method for signature 'agentMatrix,missing,missing,missing'
x[i, j, ..., drop = FALSE]

## S4 method for signature 'agentMatrix,missing,character,ANY'
x[i, j, ..., drop = TRUE]

## S4 method for signature 'agentMatrix,numeric,character,ANY'
x[i, j, ..., drop = FALSE]

## S4 method for signature 'agentMatrix,missing,numeric,ANY'
x[i, j, ..., drop = FALSE]

## S4 replacement method for signature 'agentMatrix,numeric,numeric,numeric'
x[i, j] <- value

## S4 replacement method for signature 'agentMatrix,missing,numeric,numeric'
x[i, j] <- value

## S4 replacement method for signature 'agentMatrix,numeric,missing,numeric'
x[i, j] <- value

## S4 replacement method for signature 'agentMatrix,numeric,character,data.frame'
x[i, j] <- value

## S4 replacement method for signature 'agentMatrix,numeric,numeric,character'
x[i, j] <- value

## S4 replacement method for signature 'agentMatrix,missing,numeric,character'
x[i, j] <- value

## S4 replacement method for signature 'agentMatrix,missing,character,character'
x[i, j] <- value

## S4 replacement method for signature 'agentMatrix,numeric,character,character'
x[i, j] <- value

## S4 method for signature 'agentMatrix'
x$name

Arguments

Value

An agentMatrix when full row(s), full column(s) or element(s) at specific row(s) and column(s) is/are extracted.

Note

Extract methods for agentMatrix class will generally maintain the agentMatrix class. This means that there will still be coordinates, character columns represented as numerics etc. $ is for extracting the raw columns and does not maintain the agentMatrix class. ⁠[]⁠ will extract all values, and result in a data.frame with the correct character and numeric columns.

Description

Subsetting and replacing for worldArray class

Usage

## S4 method for signature 'worldArray,ANY,missing'
x[[i]]

## S4 replacement method for signature 'worldArray,ANY,missing'
x[[i]] <- value

## S4 method for signature 'worldArray'
x$name

Arguments

Value

The replacement method returns the original object, but with updated elements. The accessor method extracts the entire layer.

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9, data = runif(100))
w2 <- createWorld(0, 9, 0, 9, data = runif(100))
w3 <- createWorld(0, 9, 0, 9, data = runif(100) + 2) # add 2 so different range
a1 <- stackWorlds(w1, w2)
a1[[2]]
a1[[2]] <- w3

Description

Binary operators which allow the comparison of values in an agentMatrix.

Usage

## S4 method for signature 'agentMatrix,character'
e1 == e2

## S4 method for signature 'agentMatrix,numeric'
e1 == e2

Arguments

Value

A logical vector indicating the result of the element by element comparison.

Description

This is a fast alternative to the SpatialPointsDataFrame. It is meant to replace that functionality, though there are not as many methods (yet). The object is primarily a numeric matrix. Any character column passed to ... will be converted to a numeric, using as.factor internally, and stored as a numeric. Methods using this class will automatically convert character queries to the correct numeric alternative.

Usage

agentMatrix(..., coords)

## S4 method for signature 'matrix'
agentMatrix(..., coords)

## S4 method for signature 'missing'
agentMatrix(..., coords)

Arguments

Value

An agentMatrix object

Author(s)

Eliot McIntire

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#clear-turtles

Examples

newAgent <- agentMatrix(
  coords = cbind(pxcor = c(1, 2, 5), pycor = c(3, 4, 6)),
  char = letters[c(1, 2, 6)],
  nums2 = c(4.5, 2.6, 2343),
  char2 = LETTERS[c(4, 24, 3)],
  nums = 5:7
)

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = runif(25)
)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))

Description

The agentMatrix class

Author(s)

Eliot McIntire

Examples

newAgent <- new("agentMatrix",
  coords = cbind(pxcor = c(1, 2, 5), pycor = c(3, 4, 6)),
  char = letters[c(1, 2, 6)],
  nums2 = c(4.5, 2.6, 2343),
  char2 = LETTERS[c(4, 24, 3)],
  nums = 5:7
)

# compare speeds -- about 5x faster
if (requireNamespace("microbenchmark", quietly = TRUE) &&
  requireNamespace("sp", quietly = TRUE)) {
  microbenchmark::microbenchmark(
    times = 499,
    spdf = {
      sp::SpatialPointsDataFrame(
        coords = cbind(pxcor = c(1, 2, 5), pycor = c(3, 4, 6)),
        data = data.frame(
          char = letters[c(1, 2, 6)],
          nums2 = c(4.5, 2.6, 2343),
          char2 = LETTERS[c(4, 24, 3)],
          nums = 5:7
        )
      )
    },
    agentMat = {
      agentMatrix(
        coords = cbind(
          pxcor = c(1, 2, 5),
          pycor = c(3, 4, 6)
        ),
        char = letters[c(1, 2, 6)],
        nums2 = c(4.5, 2.6, 2343),
        char2 = LETTERS[c(4, 24, 3)],
        nums = 5:7
      )
    },
    agentMatDirect = {
      new("agentMatrix",
        coords = cbind(
          pxcor = c(1, 2, 5),
          pycor = c(3, 4, 6)
        ),
        char = letters[c(1, 2, 6)],
        nums2 = c(4.5, 2.6, 2343),
        char2 = LETTERS[c(4, 24, 3)],
        nums = 5:7
      )
    }
  )
}

Description

These are methods for classes in NetLogoR, i.e., agentMatrix, worldMatrix, and worldArray.

Replacement method sets the bbox attribute of an agentMatrix.

Usage

bbox(obj)

## S4 method for signature 'agentMatrix'
bbox(obj)

## S4 method for signature 'ANY'
bbox(obj)

bbox(obj) <- value

## S4 replacement method for signature 'agentMatrix,matrix'
bbox(obj) <- value

## S4 method for signature 'worldNLR'
bbox(obj)

## S4 method for signature 'SpatExtent'
bbox(obj)

Arguments

Value

The replacement method returns the same object as supplied to obj, i.e., an agentMatrix, with the bbox attribute set to value.

See Also

extent(), coordinates(), sp::bbox

Examples

newAgent <- agentMatrix(
  coords = cbind(pxcor = c(1, 2, 5), pycor = c(3, 4, 6)),
  char = letters[c(1, 2, 6)],
  nums2 = c(4.5, 2.6, 2343),
  char2 = LETTERS[c(4, 24, 3)],
  nums = 5:7
)
bbox(newAgent)
extent(newAgent)
coordinates(newAgent)

Description

Move the turtles backward of their headings' directions.

Usage

bk(turtles, dist, world, torus = FALSE, out = TRUE)

## S4 method for signature 'agentMatrix,numeric'
bk(turtles, dist, world, torus = FALSE, out = TRUE)

Arguments

Details

If torus = FALSE and out = TRUE, world does not need to be provided.

     If a distance to move leads a `turtle` outside of the `world`'s extent
     and `torus = TRUE`, the `turtle` is
     relocated on the other side of the `world`, inside its extent; if
     `torus = FALSE` and `out = TRUE`, the `turtle` moves past the
     `world`'s extent; if `torus = FALSE` and `out = FALSE`, the
     `turtle` does not move at all. In the event that a `turtle` does not move,
     its previous coordinates are still updated with its position before
     running `bk()` (i.e., its current position).

     If a given `dist` value is negative, then the `turtle` moves
     forward.

     The `turtles`' headings are not affected by the function (i.e., the
     `turtles` do not face backward).

Value

AgentMatrix representing the turtles with updated coordinates and updated data for their previous coordinates prevX and prevY.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#back

     <https://ccl.northwestern.edu/netlogo/docs/dictionary.html#jump>

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = runif(25)
)
t1 <- createOTurtles(n = 10, world = w1)
plot(w1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

t1 <- fd(turtles = t1, dist = 2)
points(t1, col = of(agents = t1, var = "color"), pch = 16)
t1 <- bk(turtles = t1, dist = 1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)
t1 <- fd(turtles = t1, dist = 0.5)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

Description

Report TRUE if a turtle can move the given distance without leaving the world's extent, report FALSE otherwise.

Usage

canMove(world, turtles, dist)

## S4 method for signature 'worldNLR,agentMatrix,numeric'
canMove(world, turtles, dist)

Arguments

Value

Logical. Vector of length turtles.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#can-move

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(n = 10, world = w1)
canMove(world = w1, turtles = t1, dist = 1:10)

Description

Take a sequence of agentMatrix arguments and combine by columns or rows, respectively. This will take the coordinates of the first argument and remove the coordinates of the second object.

Usage

## S3 method for class 'agentMatrix'
cbind(..., deparse.level)

## S3 method for class 'agentMatrix'
rbind(..., deparse.level = 1)

Arguments

Value

An agentMatrix object.

Description

Report the cells numbers as defined for a ⁠Raster*⁠ object given the patches coordinates pxcor and pycor.

Usage

cellFromPxcorPycor(world, pxcor, pycor)

## S4 method for signature 'worldNLR,numeric,numeric'
cellFromPxcorPycor(world, pxcor, pycor)

Arguments

Value

Numeric. Vector of cells number.

Author(s)

Sarah Bauduin

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
cellFromPxcorPycor(world = w1, pxcor = 0, pycor = 9)
cellFromPxcorPycor(world = w1, pxcor = c(0, 1, 2), pycor = 0)

Description

Reset all patches values to NA.

Usage

clearPatches(world)

## S4 method for signature 'worldMatrix'
clearPatches(world)

## S4 method for signature 'worldArray'
clearPatches(world)

Arguments

Value

WorldMatrix object with NA values for all patches.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#clear-patches

Examples

w1 <- createWorld()
w1 <- NLset(world = w1, agents = patches(w1), val = runif(NLcount(patches(w1))))
w1Val <- of(world = w1, agents = patches(w1))
summary(w1Val)

w1 <- clearPatches(w1)
w1Val <- of(world = w1, agents = patches(w1))
summary(w1Val)

Description

Spatial accessors and setters for NetLogoR classes

Usage

## S4 method for signature 'agentMatrix'
coordinates(obj, ...)

Arguments

Value

coordinates returns a matrix of coordinates of the obj.

See Also

bbox(), extent()

Description

Create n turtles at the center of the world with their headings evenly distributed.

Usage

createOTurtles(n, world, breed, color)

## S4 method for signature 'numeric'
createOTurtles(n, world, breed, color)

Arguments

Details

The identity of the turtles is defined by their who number. This numbering starts at 0 and increments by 1.

     The coordinates from the previous time step are stored in `prevX` and
     `prevY`. The initial values are `NA`.

Value

AgentMatrix object of length n with data for the turtles being: xcor, ycor, who, heading, prevX, prevY, breed, and color.

Author(s)

Sarah Bauduin and Eliot McIntire

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#create-ordered-turtles

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = runif(25)
)
t1 <- createOTurtles(n = 10, world = w1)
plot(w1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

t1 <- fd(turtles = t1, dist = 1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

Description

Create n moving agents with a set of defined variables.

Usage

createTurtles(n, coords, world, heading, breed, color)

## S4 method for signature 'numeric,matrix,missing'
createTurtles(n, coords, world, heading, breed, color)

## S4 method for signature 'numeric,missing,ANY'
createTurtles(n, coords, world, heading, breed, color)

Arguments

Details

If coords is provided, world must not be provided.

     The identity of the `turtles` is defined by their `who` number. This
     numbering starts at 0 and increments by 1.

     The coordinates from the previous time step are stored in `prevX` and
     `prevY`. The initial values are `NA`.

Value

AgentMatrix object of length n with data for the turtles being: xcor, ycor, who, heading, prevX, prevY, breed, and color.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#create-turtles

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = runif(25)
)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
plot(w1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

Description

Create a world of patches of class worldMatrix.

Usage

createWorld(minPxcor, maxPxcor, minPycor, maxPycor, data = NA)

## S4 method for signature 'numeric,numeric,numeric,numeric,ANY'
createWorld(minPxcor, maxPxcor, minPycor, maxPycor, data = NA)

## S4 method for signature 'missing,missing,missing,missing,missing'
createWorld()

Arguments

Details

If data is provided, values are assigned by rows.

     If no parameters value are provided, default values are:
     `minPxcor = -16`,
     `maxPxcor = 16`, `minPycor = -16`, and `maxPycor = 16`.

     See `help("worldMatrix-class")` for more details on the `worldMatrix` class.

Value

WorldMatrix object composed of (maxPxcor - minPxcor + 1) * (maxPycor - minPycor + 1) patches (i.e., matrix cells).

Author(s)

Sarah Bauduin, Eliot McIntire, and Alex Chubaty

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4, data = 1:25)
plot(w1)

Description

Kill selected turtles.

Usage

die(turtles, who)

## S4 method for signature 'agentMatrix,numeric'
die(turtles, who)

Arguments

Details

The who numbers of the remaining turtles are unchanged.

Value

AgentMatrix representing the turtles with the selected ones removed.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#die

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(n = 10, world = w1)
NLcount(t1)
t1 <- die(turtles = t1, who = c(2, 3, 4))
NLcount(t1)

Description

Each patch gives an equal share of a portion of its value to its neighbor patches.

Usage

diffuse(world, pVar, share, nNeighbors, torus = FALSE)

## S4 method for signature 'worldMatrix,missing,numeric,numeric'
diffuse(world, share, nNeighbors, torus)

## S4 method for signature 'worldArray,character,numeric,numeric'
diffuse(world, pVar, share, nNeighbors, torus = FALSE)

Arguments

Details

What is given is lost for the patches.

     If `torus = TRUE`, all `patches` have `nNeighbors` `patches` around
     them, which
     some may be on the other sides of the `world`. If `torus = FALSE`,
     `patches` located on the edges of the `world` have less than
     `nNeighbors` `patches` around them.
     However, each neighbor still gets 1/4 or 1/8 of the shared amount
     and the diffusing
     patch keeps the leftover.

Value

WorldMatrix or worldArray object with patches values updated.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#diffuse

     <https://ccl.northwestern.edu/netlogo/docs/dictionary.html#diffuse4>

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = sample(1:3, size = 25, replace = TRUE)
)
plot(w1)
# Diffuse 50% of each patch value to its 8 neighbors
if (requireNamespace("SpaDES.tools", quietly = TRUE)) {
  w2 <- diffuse(world = w1, share = 0.5, nNeighbors = 8)
  plot(w2)
}

Description

Move the turtles to their neighboring patch with the lowest value.

Usage

downhill(world, pVar, turtles, nNeighbors, torus = FALSE)

## S4 method for signature 'worldMatrix,missing,agentMatrix,numeric'
downhill(world, turtles, nNeighbors, torus)

## S4 method for signature 'worldArray,character,agentMatrix,numeric'
downhill(world, pVar, turtles, nNeighbors, torus = FALSE)

Arguments

Details

If no neighboring patch has a smaller value than the patch where the turtle is currently located on, the turtle stays on this patch. It still moves to the patch center if it was not already on it.

     If there are multiple neighboring `patches` with the same lowest value,
     the `turtle` chooses one `patch` randomly.

     If a `turtle` is located on a `patch` on the edge
     of the `world` and `torus = FALSE`, it has fewer
     neighboring `patches` as options to move than `nNeighbors`; if
     `torus = TRUE`, the `turtle` can move on the other side of the `world` to
     move downhill and its choice of neighboring `patches` is always equals to
     `nNeighbors`.

Value

AgentMatrix representing the turtles with updated coordinates and updated data for their heading values and previous coordinates prevX and prevY.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#downhill

Examples

w1 <- createWorld(
  minPxcor = 1, maxPxcor = 10, minPycor = 1, maxPycor = 10,
  data = runif(100)
)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
plot(w1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

if (requireNamespace("SpaDES.tools", quietly = TRUE)) {
  t1 <- downhill(world = w1, turtles = t1, nNeighbors = 8)
  points(t1, col = of(agents = t1, var = "color"), pch = 16)
}

Description

Report the amount by which the turtles' coordinates xcor would change if the turtles were to move forward the given distances with their current headings.

Usage

dx(turtles, dist = 1)

## S4 method for signature 'agentMatrix,numeric'
dx(turtles, dist = 1)

## S4 method for signature 'agentMatrix,missing'
dx(turtles)

Arguments

Details

Report the sine of the turtles' heading multiplied by the dist values. Heading 0 is north and angles are calculated in degrees in a clockwise manner.

Value

Numeric. Vector of length turtles.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#dxy

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createOTurtles(world = w1, n = 10)
dx(turtles = t1)

Description

Report the amount by which the turtles' coordinates ycor would change if the turtles were to move forward the given distances with their current headings.

Usage

dy(turtles, dist = 1)

## S4 method for signature 'agentMatrix,numeric'
dy(turtles, dist = 1)

## S4 method for signature 'agentMatrix,missing'
dy(turtles)

Arguments

Details

Report the cosine of the turtles' heading multiplied by the dist values. Heading 0 is north and angles are calculated in degrees in a clockwise manner.

Value

Numeric. Vector of length turtles.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#dxy

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createOTurtles(world = w1, n = 10)
dy(turtles = t1)

Description

Same as sp::bbox and raster::extent.

Usage

## S4 method for signature 'worldNLR'
extent(x, ...)

## S4 method for signature 'agentMatrix'
extent(x, ...)

Arguments

Value

bbox returns a two-column matrix; the first column has the minimum, the second the maximum values; rows represent the spatial dimensions. extent returns an SpatExtent object from the package terra.

See Also

bbox(), coordinates()

Description

Set the turtles' heading towards agents2.

Usage

face(turtles, agents2, world, torus = FALSE)

## S4 method for signature 'agentMatrix,matrix'
face(turtles, agents2, world, torus = FALSE)

Arguments

           `AgentMatrix` object representing the moving `agents`, or

           Matrix (`ncol` = 2) with the first column `x` and the second column
           `y` representing locations coordinates.

Details

The number of agents/locations in agents2 must be equal to 1 or to the length of turtles.

     If `torus = FALSE`, `world` does not need to be provided.

     If `torus = TRUE` and the distance from one `turtles` to
     its corresponding agent/location `agents2` is smaller around the
     sides of the `world` than across it, then the direction to the agent/location
     `agents2` going around the sides of the `world` is given to the `turtle`.

     If a turtle is facing its own location, its heading does not change.

Value

AgentMatrix representing the turtles with updated headings.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#face

     <https://ccl.northwestern.edu/netlogo/docs/dictionary.html#facexy>

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = runif(25)
)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
plot(w1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

t1 <- face(turtles = t1, agents2 = cbind(x = 0, y = 0))
t1 <- fd(turtles = t1, dist = 0.5)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

Description

Move the turtles forward with their headings as directions.

Usage

fd(turtles, dist, world, torus = FALSE, out = TRUE)

## S4 method for signature 'agentMatrix,numeric'
fd(turtles, dist, world, torus = FALSE, out = TRUE)

Arguments

Details

If torus = FALSE and out = TRUE, world does not need to be provided.

     If a distance to move leads a `turtle` outside of the `world`'s extent
     and `torus = TRUE`, the `turtle` is
     relocated on the other side of the `world`, inside its extent; if
     `torus = FALSE` and `out = TRUE`, the `turtle` moves past the
     `world`'s extent; if `torus = FALSE` and `out = FALSE`, the
     `turtle` does not move at all. In the event that a `turtle` does not move,
     its previous coordinates are still updated with its position before
     running `fd()` (i.e., its current position).

     If a given `dist` value is negative, then the `turtle` moves
     backward.

Value

AgentMatrix representing the turtles with updated coordinates and updated data for their previous coordinates prevX and prevY.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#forward

     <https://ccl.northwestern.edu/netlogo/docs/dictionary.html#jump>

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = runif(25)
)
t1 <- createOTurtles(n = 10, world = w1)
plot(w1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

t1 <- fd(turtles = t1, dist = 1)
points(t1, col = of(agents = t1, var = "color"), pch = 16)

Description

Create new turtles from parent turtles.

Usage

hatch(turtles, who, n, breed)

## S4 method for signature 'agentMatrix,numeric,numeric'
hatch(turtles, who, n, breed)

Arguments

Details

The parent turtle must be contained in the turtles.

     The created `turtles` inherit of all the data from the parent `turtle`,
     except for the `breed` if specified otherwise, and for the `who` numbers.
     The `who`" numbers of the `turtles` created take on following the highest
     `who` number among the `turtles`.

     All new hatched `turtles` are placed at the end of the `agentMatrix` object.

Value

AgentMatrix representing the turtles with the new hatched ones.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#hatch

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(n = 10, world = w1)
NLcount(t1)
t1 <- hatch(turtles = t1, who = 0, n = 2)
NLcount(t1)

Description

Move the turtles back home.

Usage

home(world, turtles, home)

## S4 method for signature 'worldNLR,agentMatrix,character'
home(world, turtles, home)

Arguments

           `home = "home0"` will place the `turtles` at the location
           `x = 0, y = 0`.

           `home = "center"` will place the `turtles` at the center of
           the `world`.

           `home = "pCorner"` will place the `turtles` at the center of
           the `patch` located in the left bottom corner of the `world`.

           `home = "corner"` will place the `turtles` at the left bottom
           corner of the `world`.

Value

AgentMatrix representing the turtles with updated coordinates and updated data for their previous coordinates prevX and prevY.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#home

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = runif(25)
)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
plot(w1)
points(t1, col = "black", pch = 16)

t1 <- home(world = w1, turtles = t1, home = "pCorner")
points(t1, col = "red", pch = 16)

Description

Report the agents within the "cone of vision" in front of each one of the turtles.

Usage

inCone(turtles, radius, angle, agents, world, torus = FALSE)

## S4 method for signature 'agentMatrix,numeric,numeric,matrix'
inCone(turtles, radius, angle, agents, world, torus = FALSE)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

agents are reported if there are within radius distance of the turtle and their direction from the turtle is within ⁠[-angle, + angle]⁠ of the turtle's heading.

     Distances to `patches` are calculated to their center.

     If `torus = FALSE`, `world` does not need to be provided.

     If `torus = TRUE`, the `radius` distances are calculated
     around the sides of the `world` to select `agents`.

Value

Matrix (ncol = 3) with the first column pxcor and the second column pycor representing the coordinates of the patches among agents2 within the cone of vision of each of the turtles which are represented by the id column, if agents are patches, or

    Matrix (`ncol` = 2) with the first column `who`
    representing the `who` numbers of the
    `turtles` among `agents2` within the cone of vision of each of  the
    `turtles`
    which are represented by the `id` column, if
    `agents` are `turtles`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#in-cone

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))

if (requireNamespace("sf", quietly = TRUE)) {
  p1 <- inCone(turtles = t1, radius = 2, agents = patches(w1), angle = 90)
  t2 <- inCone(turtles = turtle(t1, who = 0), radius = 2, angle = 90, agents = t1)
}

Description

To create a new agentMatrix object.

Usage

## S4 method for signature 'agentMatrix'
initialize(.Object = "agentMatrix", coords, ..., levelsAM)

Arguments

Value

An agentMatrix object.

Description

Report the patches or turtles among agents2 within given distances of each of the agents. Currently, this function multiplies radius by 1.0000001 so that the response of inRadius is inclusive.

Usage

inRadius(agents, radius, agents2, world, torus = FALSE)

## S4 method for signature 'matrix,numeric,matrix'
inRadius(agents, radius, agents2, world, torus = FALSE)

Arguments

          `AgentMatrix` object representing the moving `agents`.

          `AgentMatrix` object representing the moving `agents`.

Details

Distances from/to patches are calculated from/to their center.

     If `torus = FALSE`, `world` does not need to be provided.

     If `torus = TRUE`, the `radius` distances are calculated
     around the sides of the `world` to select `agents2`.

Value

Matrix (ncol = 3) with the first column pxcor and the second column pycor representing the coordinates of the patches among agents2 within radius distances for each agents which are represented by the id column, if agents2 are patches, or

    Matrix (`ncol` = 2) with the first column `who`
    representing the `who` numbers of the
    `turtles` among `agents2` within `radius` distances for each `agents`
    which are represented by the `id` column, if
    `agents2` are `turtles`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#in-radius

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))

if (requireNamespace("sf", quietly = TRUE)) {
  p1 <- inRadius(agents = patch(w1, 0, 0), radius = 2, agents2 = patches(w1))
  t2 <- inRadius(agents = patch(w1, 0, 0), radius = 2, agents2 = t1)
  p2 <- inRadius(agents = t1, radius = 2, agents2 = patches(w1))
  t3 <- inRadius(agents = turtle(t1, who = 0), radius = 2, agents2 = t1)
}

Description

Display all variables values for the selected individuals among the turtles.

Usage

inspect(turtles, who)

## S4 method for signature 'agentMatrix,numeric'
inspect(turtles, who)

Arguments

Value

Dataframe (nrow = length(who)) of the variables of the selected individuals among the turtles.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#inspect

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
t1 <- createOTurtles(world = w1, n = 10)
inspect(turtles = t1, who = c(2, 3))

Description

Report TRUE if the agents is of the class tested, report FALSE otherwise.

Usage

isNLclass(agents, class)

## S4 method for signature 'matrix,character'
isNLclass(agents, class)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

Careful! The class tested does not correspond to actual R classes.

     `agents` is `"patch"` if it is a matrix (`ncol` = 2) with the
     first column `pxcor` and the second column `pycor` with only
     one row. `agents` is `"patcheset"` if the matrix has more than
     one row.

     `agents` is `"turtle"` if it is an `agentMatrix`
     containing only one `turtle`.
     `agents` is `"turtleset"` if the
     `agentMatrix` contains more than one `turtle`.

     `agents` is `"agent"` if it is either `"patch"` or
     `"turtle"`. `agents` is `"agentset"` if it is either
     `"patcheset"` or `"turtleset"`.

Value

Logical. TRUE if agents is of the class tested.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#is-of-type

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(
  n = 10, coords = randomXYcor(w1, n = 10),
  heading = sample(1:3, size = 10, replace = TRUE)
)
isNLclass(agents = patches(w1), class = "patch")
isNLclass(agents = patches(w1), class = "patcheset")
isNLclass(agents = t1, class = "agentset")
isNLclass(agents = t1, class = "turtleset")

Description

Relocate the turtles on a circle centered on the world.

Usage

layoutCircle(world, turtles, radius, torus = FALSE)

## S4 method for signature 'worldNLR,agentMatrix,numeric'
layoutCircle(world, turtles, radius, torus = FALSE)

Arguments

Details

The turtles point outwards.

     If the
     `radius` value leads `turtles` outside of the `world`'s extent
     and `torus = TRUE`, they are
     relocated on the other sides of the `world`, inside its extent; if
     `torus = FALSE`, the `turtles` are located past
     the `world`'s extent.

Value

AgentMatrix representing the turtles with updated coordinates and updated data for their heading values and previous coordinates prevX and prevY.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#layout-circle

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9,
  data = runif(100)
)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
plot(w1)
points(t1, col = "black", pch = 16)

t1 <- layoutCircle(world = w1, turtles = t1, radius = 3)
points(t1, col = "red", pch = 16)

Description

Rotate the turtles's headings to the left of angle degrees.

Usage

left(turtles, angle)

## S4 method for signature 'agentMatrix,numeric'
left(turtles, angle)

Arguments

Details

If a given angle value is negative, then the turtle rotates to the right.

Value

AgentMatrix representing the turtles with updated heading values.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#left

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(n = 10, world = w1)
of(agents = t1, var = "heading")
t1 <- left(turtles = t1, angle = 180)
of(agents = t1, var = "heading")

Description

Report the n patches or turtles among agents which have their variable among the maximum values.

Usage

maxNof(agents, n, world, var)

## S4 method for signature 'matrix,numeric,worldMatrix,missing'
maxNof(agents, n, world)

## S4 method for signature 'matrix,numeric,worldArray,character'
maxNof(agents, n, world, var)

## S4 method for signature 'agentMatrix,numeric,missing,character'
maxNof(agents, n, var)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

world must not be provided if agents are turtles.

     If there is a tie that would make the number of returned `patches` or `turtles` larger
     than `n`, it is broken randomly.

Value

Matrix (ncol = 2, nrow = n) with the first column pxcor and the second column pycor representing the coordinates of the n patches among the agents which have their variable values among the maximum values among the agents, or

    `AgentMatrix` of length `n` representing the `turtles` among the
    `agents` which
    have their `var` values among the maximum values among the `agents`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#max-n-of

Examples

# Patches
w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = sample(1:10, size = 25, replace = TRUE)
)
plot(w1)
p1 <- maxNof(agents = patches(w1), n = 6, world = w1)

# Turtles
t1 <- createTurtles(
  n = 10, coords = randomXYcor(w1, n = 10),
  heading = sample(1:5, size = 10, replace = TRUE)
)
t2 <- maxNof(agents = t1, n = 5, var = "heading")

Description

Report one patch or one turtle among agents which has its variable equals to the maximum value.

Usage

maxOneOf(agents, world, var)

## S4 method for signature 'matrix,worldMatrix,missing'
maxOneOf(agents, world)

## S4 method for signature 'matrix,worldArray,character'
maxOneOf(agents, world, var)

## S4 method for signature 'agentMatrix,missing,character'
maxOneOf(agents, var)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

world must not be provided if agents are turtles.

     If there are several `patches` or `turtles` among `agents` with their
     variable equal to the maximum
     value, one is chosen randomly. To access to all `patches` or `turtles` among
     `agents` which have their variable equal
     to the maximum value, use `withMax()`.

Value

Matrix (ncol = 2, nrow = 1) with the first column pxcor and the second column pycor representing the coordinates of the patch (or of one of the patches) among the agents which has its variable equals to the maximum value among the agents, or

    `AgentMatrix` of length 1 representing the `turtle` (or one of
    the `turtles`) among the `agents` which has its variable `var`
    equals to the maximum value
    among the `agents`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#max-one-of

Examples

# Patches
w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = sample(1:5, size = 25, replace = TRUE)
)
plot(w1)
p1 <- maxOneOf(agents = patches(w1), world = w1)

# Turtles
t1 <- createTurtles(
  n = 10, coords = randomXYcor(w1, n = 10),
  heading = sample(1:3, size = 10, replace = TRUE)
)
t2 <- maxOneOf(agents = t1, var = "heading")

Description

Report the patches maximum pxcor in the world.

Usage

maxPxcor(world)

## S4 method for signature 'worldNLR'
maxPxcor(world)

Arguments

Value

Integer.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#max-pcor

Examples

w1 <- createWorld()
maxPxcor(w1)

Description

Report the patches maximum pycor in the world.

Usage

maxPycor(world)

## S4 method for signature 'worldNLR'
maxPycor(world)

Arguments

Value

Integer.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#max-pcor

Examples

w1 <- createWorld()
maxPycor(w1)

Description

Report the n patches or turtles among agents which have their variable among the minimum values.

Usage

minNof(agents, n, world, var)

## S4 method for signature 'matrix,numeric,worldMatrix,missing'
minNof(agents, n, world)

## S4 method for signature 'matrix,numeric,worldArray,character'
minNof(agents, n, world, var)

## S4 method for signature 'agentMatrix,numeric,missing,character'
minNof(agents, n, var)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

world must not be provided if agents are turtles.

     If there is a tie that would make the number of returned `patches` or `turtles` larger
     than `n`, it is broken randomly.

Value

Matrix (ncol = 2, nrow = n) with the first column pxcor and the second column pycor representing the coordinates of the n patches among the agents which have their variable values among the minimum values among the agents, or

    `AgentMatrix` of length `n` representing the `turtles` among the
    `agents` which
    have their `var` values among the minimum values among the `agents`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#min-n-of

Examples

# Patches
w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = sample(1:10, size = 25, replace = TRUE)
)
plot(w1)
p1 <- minNof(agents = patches(w1), n = 6, world = w1)

# Turtles
t1 <- createTurtles(
  n = 10, coords = randomXYcor(w1, n = 10),
  heading = sample(1:5, size = 10, replace = TRUE)
)
t2 <- minNof(agents = t1, n = 5, var = "heading")

Description

Report one patch or one turtle among agents which has its variable equals to the minimum value.

Usage

minOneOf(agents, world, var)

## S4 method for signature 'matrix,worldMatrix,missing'
minOneOf(agents, world)

## S4 method for signature 'matrix,worldArray,character'
minOneOf(agents, world, var)

## S4 method for signature 'agentMatrix,missing,character'
minOneOf(agents, var)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

world must not be provided if agents are turtles.

     If there are several `patches` or `turtles` among `agents` with their
     variable equal to the minimum
     value, one is chosen randomly. To access to all `patches` or `turtles` among
     `agents` which have their variable equal
     to the minimum value, use `withMin()`.

Value

Matrix (ncol = 2, nrow = 1) with the first column pxcor and the second column pycor representing the coordinates of the patch (or of one of the patches) among the agents which has its variable equals to the minimum value among the agents, or

    `AgentMatrix` of length 1 representing the `turtle` (or one of
    the `turtles`) among the `agents` which has its variable `var`
    equals to the minimum value
    among the `agents`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#min-one-of

Examples

# Patches
w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = sample(1:5, size = 25, replace = TRUE)
)
plot(w1)
p1 <- minOneOf(agents = patches(w1), world = w1)

# Turtles
t1 <- createTurtles(
  n = 10, coords = randomXYcor(w1, n = 10),
  heading = sample(1:3, size = 10, replace = TRUE)
)
t2 <- minOneOf(agents = t1, var = "heading")

Description

Report the patches minimum pxcor in the world.

Usage

minPxcor(world)

## S4 method for signature 'worldNLR'
minPxcor(world)

Arguments

Value

Integer.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#min-pcor

Examples

w1 <- createWorld()
minPxcor(w1)

Description

Report the patches minimum pycor in the world.

Usage

minPycor(world)

## S4 method for signature 'worldNLR'
minPycor(world)

Arguments

Value

Integer.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#min-pcor

Examples

w1 <- createWorld()
minPycor(w1)

Description

Move the turtles to the agents' locations.

Usage

moveTo(turtles, agents)

## S4 method for signature 'agentMatrix,matrix'
moveTo(turtles, agents)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

The number of agents must be equal to 1 or to length turtles.

     The `turtle`'s `headings` are not affected with this function.

     If a `turtle` is moving to a `patch` location, it will be located at
     the `patch` center.

Value

AgentMatrix representing the turtles with updated coordinates and updated data for their previous coordinates prevX and prevY.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#move-to

Examples

w1 <- createWorld(
  minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9,
  data = runif(100)
)
t1 <- createTurtles(n = 5, coords = randomXYcor(w1, n = 5))
plot(w1)
points(t1, col = "black", pch = 16)

t1 <- moveTo(turtles = t1, agents = turtle(t1, who = 0))
points(t1, col = "red", pch = 16)

t1 <- moveTo(turtles = t1, agents = patch(w1, 9, 9))
points(t1, col = "blue", pch = 16)

Description

Report the coordinates of the neighbors patches around the agents.

Usage

neighbors(world, agents, nNeighbors, torus = FALSE)

## S4 method for signature 'worldNLR,matrix,numeric'
neighbors(world, agents, nNeighbors, torus = FALSE)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

The patch around which the neighbors are identified, or the patch where the turtle is located on around which the neighbors are identified, is not returned.

     If `torus = FALSE`, `agents` located on the edges of the
     `world` have less than `nNeighbors` patches around them.
     If `torus = TRUE`, all `agents` located on the edges of the
     `world` have `nNeighbors` patches around them,
     which some may be on the other sides of the `world`.

Value

Matrix (ncol = 3) with the first column pxcor and the second column pycor representing the coordinates of the neighbors patches around the agents and the third column id representing the id of the agents in the order provided.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#neighbors

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
if (requireNamespace("SpaDES.tools", quietly = TRUE)) {
  neighbors(world = w1, agents = patch(w1, c(0, 9), c(0, 7)), nNeighbors = 8)
  t1 <- createTurtles(n = 3, coords = randomXYcor(w1, n = 3))
  neighbors(world = w1, agents = t1, nNeighbors = 4)
}

Description

Report TRUE if all agents have their variable equal to a given value, report FALSE otherwise.

Usage

NLall(agents, world, var, val)

## S4 method for signature 'matrix,worldMatrix,missing'
NLall(agents, world, val)

## S4 method for signature 'matrix,worldArray,character'
NLall(agents, world, var, val)

## S4 method for signature 'agentMatrix,missing,character'
NLall(agents, var, val)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

world must not be provided if agents are turtles.

Value

Logical. TRUE if all the agents have their variable equal to val, FALSE otherwise.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#all

Examples

# Patches
w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4, data = runif(25))
NLall(agents = patches(w1), world = w1, val = 5)
w2 <- w1
w2 <- NLset(world = w1, agents = patches(w1), val = 5)
NLall(agents = patches(w2), world = w2, val = 5)

# Turtles
t1 <- createTurtles(n = 5, coords = cbind(xcor = 1, ycor = 1), heading = c(1, 2, 2, 1, 2))
NLall(agents = t1, var = "xcor", val = 1)
NLall(agents = t1, var = "heading", val = 2)

Description

Report TRUE if agents is non empty, report FALSE otherwise.

Usage

NLany(agents)

## S4 method for signature 'matrix'
NLany(agents)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Value

Logical. TRUE if there is at least one patch or one turtle in the agents, FALSE otherwise.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#any

Examples

# Patches
w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
p1 <- noPatches()
p2 <- patch(w1, 0, 0)
NLany(p1)
NLany(p2)

# Turtles
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
t2 <- noTurtles()
NLany(t1)
NLany(t2)

Description

Report the number of patches or turtles inside agents.

Usage

NLcount(agents)

## S4 method for signature 'matrix'
NLcount(agents)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Value

Integer.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#count

Examples

# Patches
w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
p1 <- patches(w1)
NLcount(p1) # 25 patches

# Turtles
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
NLcount(t1) # 10 turtles

Description

Report the distances between agents and agents2.

Usage

NLdist(agents, agents2, world, torus = FALSE, allPairs = FALSE)

## S4 method for signature 'matrix,matrix'
NLdist(agents, agents2, world, torus = FALSE, allPairs = FALSE)

Arguments

          `AgentMatrix` object representing the moving `agents`.

           `AgentMatrix` object representing the moving `agents`, or

           Matrix (`ncol` = 2) with the first column `x` and the second column
           `y` representing locations coordinates.

Details

Distances from/to a patch are measured from/to its center.

     If `torus = FALSE`, `world` does not need to be provided.

     If `torus = TRUE`, a distance around the sides of the `world` is
     reported only if smaller than the one across the `world`.

Value

Numeric. Vector of distances between agents and agents2 if agents and/or agents2 contained one agent/location, or if agents and agents2 contained the same number of agents/locations and allPairs = FALSE, or

    Matrix of distances between `agents` (rows) and
    `agents2` (columns)
    if `agents` and `agents2` are of different lengths,
    or of same length
    and `allPairs = TRUE`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#distance

     <https://ccl.northwestern.edu/netlogo/docs/dictionary.html#distancexy>

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
NLdist(agents = patch(w1, 0, 0), agents2 = patch(w1, c(1, 9), c(1, 9)))
NLdist(
  agents = patch(w1, 0, 0), agents2 = patch(w1, c(1, 9), c(1, 9)),
  world = w1, torus = TRUE
)
t1 <- createTurtles(n = 2, coords = randomXYcor(w1, n = 2))
NLdist(agents = t1, agents2 = patch(w1, c(1, 9), c(1, 9)), allPairs = TRUE)

Description

Assign values to the agents for the selected variables.

Usage

NLset(world, turtles, agents, var, val)

## S4 method for signature 'missing,agentMatrix,agentMatrix,character'
NLset(turtles, agents, var, val)

## S4 method for signature 'worldMatrix,missing,matrix,missing'
NLset(world, agents, val)

## S4 method for signature 'worldArray,missing,matrix,character'
NLset(world, agents, var, val)

Arguments

          `AgentMatrix` object representing the moving `agents`.

       Matrix or `Dataframe` (`ncol` = `length(var)`, `nrow` = `NLcount(agents)`).
       Columns must be in the same order as `var`.

Details

If agents are patches, world must be provided and turtles must not be provided. If agents are turtles, turtles must be provided and world must not be provided.

Value

WorldMatrix or worldArray object with the values val assigned to the patches variables var for the agents, or

    `AgentMatrix` representing the `turtles` with
    the values `val` assigned to the variables `var` for the `agents`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#set

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
w1 <- NLset(world = w1, agents = patches(w1), val = 1)
# Set the patch[0,4] to 0
w1 <- NLset(world = w1, agents = patch(w1, 0, 4), val = 0)
of(world = w1, agents = patches(w1))

t1 <- createTurtles(n = 3, world = w1, heading = 0)
# Set the heading of turtle 0 to 180
t2 <- NLset(turtles = t1, agents = turtle(t1, who = 0), var = "heading", val = 180)
of(agents = t2, var = "heading") # c(180, 0, 0)

Description

Report the patches or the turtles among agents which have their variable equals to specific values.

Usage

NLwith(agents, world, var, val)

## S4 method for signature 'matrix,worldMatrix,missing'
NLwith(agents, world, val)

## S4 method for signature 'matrix,worldArray,character'
NLwith(agents, world, var, val)

## S4 method for signature 'agentMatrix,missing,character'
NLwith(agents, var, val)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

world must not be provided if agents are turtles.

     This is equivalent in R to subsetting.

     `val` can include `NA`.

Value

Matrix (ncol = 2) with the first column pxcor and the second column pycor representing the coordinates of the patches among the agents which have their variable equals to any val, or

    `AgentMatrix` representing the `turtles` among the `agents`
    which have their variable
    `var` equals to any `val`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#with

Examples

# Patches
w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = sample(1:5, size = 25, replace = TRUE)
)
plot(w1)
p2 <- NLwith(agents = patches(w1), world = w1, val = 2)

# Turtles
t1 <- createTurtles(
  n = 5, coords = randomXYcor(w1, n = 5),
  breed = c("sheep", "sheep", "wolf", "sheep", "sheperd")
)
t2 <- NLwith(agents = t1, var = "breed", val = "sheep")
t3 <- NLwith(agents = t1, var = "breed", val = c("sheep", "wolf"))

Description

Convert vector indices or ⁠Raster*⁠ cell numbers into worldMatrix indices.

Usage

NLworldIndex(world, cellNum)

## S4 method for signature 'worldMatrix,numeric'
NLworldIndex(world, cellNum)

Arguments

Value

Numeric. Vector of worldMatrix indices.

Author(s)

Eliot McIntire

Examples

if (requireNamespace("raster", quietly = TRUE)) {
  w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9, data = 1:100)
  w1Ras <- world2raster(w1)
  index <- 24
  pxpy <- PxcorPycorFromCell(world = w1, cellNum = index)

  rasValue <- as.integer(unname(w1Ras[index]))
  # Not correct index:
  identical(w1[index], rasValue)

  # Correct index
  identical(w1[NLworldIndex(w1, index)], rasValue)
}

Description

Report n patches or turtles randomly selected among agents.

Usage

nOf(agents, n)

## S4 method for signature 'matrix,numeric'
nOf(agents, n)

Arguments

          Matrix (`ncol` = 3) with the first column "`pxcor` and the second
          column `pycor` representing the `patches` coordinates and the
          third column `id`, or

          `AgentMatrix` object representing the moving `agents`, or

          Matrix (`ncol` = 2) with the first column `whoTurtles` and the
          second column `id`.

Details

n must be less or equal the number of patches or turtles in agents.

     If `agents` is a matrix with `ncol` = 3, the selection of `n`
     random `patches` is done per individual "id". The order of the `patches`
     coordinates returned follow the order of "id".
     If `agents` is a matrix (`ncol` = 2) with columns `whoTurtles` and
     `id`, the selection of `n` random `turtles` (defined by their `whoTurtles`)
     is done per individual "id". The order of the `who` numbers returned
     follow the order of "id".

Value

Matrix (ncol = 2, nrow = n) with the first column pxcor and the second column pycor representing the coordinates of the selected patches from agents, or

    Matrix (`ncol` = 2) with the first column `pxcor`
    and the second  column `pycor` representing the coordinates of the
    selected `patches` from `agents`, `n` per individual "id", or

    `AgentMatrix` (`nrow` = `n`) representing the `turtles`
    selected from `agents`,

    Integer. Vector of `who` numbers for the selected `turtles` from
    `agents`, `n` per individual "id".

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#n-of

Examples

# Patches
w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
pSelect <- nOf(agents = patches(w1), n = 5)

# Turtles
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
tSelect <- nOf(agents = t1, n = 2)

Description

Report an empty patch agentset.

Usage

noPatches()

Value

Matrix (ncol = 2, nrow = 0) with the first column pxcor and the second column pycor.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#no-patches

Examples

p1 <- noPatches()
NLcount(p1)

Description

Report an empty turtle agentset.

Usage

noTurtles()

Value

AgentMatrix with the turtle variables defined as when using createTurtles() but with 0 turtle.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#no-turtles

Examples

t1 <- noTurtles()
NLcount(t1)

Description

These are required to create plotting methods to work with quickPlot.

Usage

## S3 method for class 'worldArray'
numLayers(x)

## S3 method for class 'worldMatrix'
numLayers(x)

## S4 method for signature 'worldArray'
layerNames(object)

## S4 method for signature 'worldArray,.quickPlotGrob'
.identifyGrobToPlot(toPlot, sGrob, takeFromPlotObj)

Arguments

Value

numLayers returns an integer representing the number of layers in a worldArray or worldMatrix (which is always 1L)

layerNames returns an character vector representing the names of the layers in a worldArray

Description

Report the agents values for the requested variable.

Usage

of(world, agents, var)

## S4 method for signature 'missing,agentMatrix,character'
of(agents, var)

## S4 method for signature 'worldMatrix,matrix,missing'
of(world, agents)

## S4 method for signature 'worldArray,matrix,character'
of(world, agents, var)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

world must be provided only if agents are patches.

Value

Vector of values for the agents if one variable is requested. The class depends of the variable class. The order of the vector follows the order of the agents, or

    Matrix or `Dataframe` (`ncol` = `length(var)`, `nrow` = `NLcount(agents)`)
    if more than one variable is requested. The row order
    follows the order of the `agents`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#of

Examples

# Patches
w1 <- createWorld(
  minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4,
  data = 1:25
)
of(world = w1, agents = patch(w1, c(0, 0), c(4, 0)))

# Turtles
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
of(agents = t1, var = "heading")

Description

Report one patch or turtle randomly selected among agents.

Usage

oneOf(agents)

## S4 method for signature 'matrix'
oneOf(agents)

Arguments

          Matrix (`ncol` = 3) with the first column "`pxcor` and the second
          column `pycor` representing the `patches` coordinates and the
          third column `id`, or

          `AgentMatrix` object representing the moving `agents`, or

          Matrix (`ncol` = 2) with the first column `whoTurtles` and the
          second column `id`.

Details

If agents is a matrix with ncol = 3, the selection of one random patch is done per individual id. The order of the patches coordinates returned follow the order of id. If agents is a matrix (ncol = 2) with columns whoTurtles and id, the selection of one random turtle (defined by their whoTurtles) is done per individual id. The order of the who numbers returned follow the order of id.

Value

Matrix (ncol = 2, nrow = 1) with the first column pxcor and the second column pycor representing the coordinates of the selected patch from agents, or

    Matrix (`ncol` = 2) with the first column `pxcor`
    and the second  column `pycor` representing the coordinates of the
    selected `patches` from `agents`, one per individual `id`, or

    `AgentMatrix` object representing the `turtle`
    selected from `agents`, or

    Integer. Vector of `who` numbers for the selected `turtles` from
    `agents`, one per individual `id`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#one-of

Examples

# Patches
w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
pSelect <- oneOf(agents = patches(w1))

# Turtles
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
tSelect <- oneOf(agents = t1)

Description

Report an agentset of the agents except specific ones.

Usage

other(agents, except)

## S4 method for signature 'matrix,matrix'
other(agents, except)

Arguments

          `AgentMatrix` object representing the moving `agents`.

          `AgentMatrix` object representing the moving `agents`.

Details

Both agents and except must be of the same class (e.g., both patches or both turtles).

     Warning: this function removes `turtles` only based on similar `who` numbers
     and `breed` names.

Value

Matrix (ncol = 2) with the first column pxcor and the second column pycor representing the patches in agents without the ones in except, or

    `AgentMatrix` representing the `turtles` in `agents` without
    the ones in `except`.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#other

Examples

# Patches
w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
p1 <- other(agents = patches(w1), except = patch(w1, 0, 0))
NLcount(p1) # 99 patches

# Turtles
t1 <- createTurtles(n = 10, coords = cbind(xcor = 0, ycor = 0))
t2 <- other(agents = t1, except = turtle(t1, who = 0))
NLcount(t2) # 9 turtles

Description

Report the coordinates of the patches at the given ⁠[x, y]⁠ locations.

Usage

patch(world, x, y, duplicate = FALSE, torus = FALSE, out = FALSE)

## S4 method for signature 'worldNLR,numeric,numeric'
patch(world, x, y, duplicate = FALSE, torus = FALSE, out = FALSE)

Arguments

Details

If a location ⁠[x, y]⁠ is outside the world's extent and torus = FALSE and out = FALSE, no patch coordinates are returned; if torus = FALSE and out = TRUE, NA are returned; if torus = TRUE, the patch coordinates from a wrapped world are returned.

Value

Matrix (ncol = 2) with the first column pxcor and the second column pycor representing the patches coordinates at ⁠[x, y]⁠.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#patch

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
patch(world = w1, x = c(0, 9.1, 8.9, 5, 5.3), y = c(0, 0, -0.1, 12.4, 12.4))
patch(
  world = w1, x = c(0, 9.1, 8.9, 5, 5.3), y = c(0, 0, -0.1, 12.4, 12.4),
  duplicate = TRUE
)
patch(
  world = w1, x = c(0, 9.1, 8.9, 5, 5.3), y = c(0, 0, -0.1, 12.4, 12.4),
  torus = TRUE
)
patch(
  world = w1, x = c(0, 9.1, 8.9, 5, 5.3), y = c(0, 0, -0.1, 12.4, 12.4),
  torus = TRUE, duplicate = TRUE
)

Description

Report the coordinates of the patches at the given distances of the turtles in the direction of their headings.

Usage

patchAhead(world, turtles, dist, torus = FALSE)

## S4 method for signature 'worldNLR,agentMatrix,numeric'
patchAhead(world, turtles, dist, torus = FALSE)

Arguments

Details

If torus = FALSE and the patch at distance dist of a turtle is outside the world's extent, NA are returned for the patch coordinates. If torus = TRUE, the patch coordinates from a wrapped world are returned.

Value

Matrix (ncol = 2) with the first column pxcor and the second column pycor representing the coordinates of the patches at the distances dist and turtles's headings directions of turtles. The order of the patches follows the order of the turtles.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#patch-ahead

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
patchAhead(world = w1, turtles = t1, dist = 1)

Description

Report the coordinates of the patches at ⁠(dx, dy)⁠ distances of the agents.

Usage

patchAt(world, agents, dx, dy, torus = FALSE)

## S4 method for signature 'worldNLR,matrix,numeric,numeric'
patchAt(world, agents, dx, dy, torus = FALSE)

Arguments

          `AgentMatrix` object representing the moving `agents`.

Details

If the patch at distance ⁠(dx, dy)⁠ of an agent is outside of the world's extent and torus = FALSE, NA are returned for the patch coordinates; if torus = TRUE, the patch coordinates from a wrapped world are returned.

Value

Matrix (ncol = 2) with the first column pxcor and the second column pycor representing the coordinates of the patches at ⁠(dx, dy)⁠ distances of the agents. The order of the patches follows the order of the agents.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#patch-at

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#at-points

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
patchCorner <- patchAt(world = w1, agents = patch(w1, 0, 0), dx = 1, dy = 1)
t1 <- createTurtles(n = 1, coords = cbind(xcor = 0, ycor = 0))
patchCorner <- patchAt(world = w1, agents = t1, dx = 1, dy = 1)