Netlogo breeds Patch#

There is no interface built-in as part of NetLogoR. The output of the function ( i.e., the turtles with newĬoordinates) needs to be re-assigned to the turtles object. ForĮxample, when moving turtles around using the fd function, Objects, they do not directly modify the ones given as arguments. The result/output of a function needs to be assigned to an object toīe kept and re-used later in the model. WorldArray object to indicate in which worldĪrgument torus indicate that the world is wrapped.

Netlogo breeds Patch#

For example, in the NLdist function, theĪrgument agents takes one patch coordinates, the argumentĪgents2 takes another patch coordinates, the argument In NetLogoR, the function arguments indicate which worldĪnd/or agents ( i.e., patches and/or turtles) are involved in # Create a world according to a given extent w1 <- createWorld( minPxcor = 0, maxPxcor = 10, minPycor = 0, maxPycor = 10) # Report the distance between the patch and the patch pDist <- NLdist( agents = cbind( pxcor = 0, pycor = 0), agents2 = cbind( pxcor = 1, pycor = 1), world = w1, torus = TRUE) Similar object types, we have implemented functions to convert between Reference system, both of which make operations dramatically faster than The key difference in this case is for speed.ĪgentMatrix is based on matrices and has no coordinate SpatialPointsDataFrame from sp package, with aįew differences. Raster* that has 1 m resolution and integer coordinates. Whereas, (0, 0) would be at the edge of a cell in a WorldMatrix that has 1m resolution and integer coordinates, (0, 0) is in the middle of the patch in a InĬoordinates are in the middle of the patch or cell, i.e., Raster* objects, as in geographic coordinates. WorldArray, (0, 0) is at the bottom left, likeĪ mathematical graph, whereas it is in the top left in Integer locations are in the center or at the corners of integer Important differences are the mapping of X and Y coordinates and whether WorldMatrix and worldArray are similar to Turtle can be positioned anywhere on a patch). Integers but turtles coordinates can have decimals ( i.e., a Turtles are defined by their coordinatesĪgentMatrix objects. Help('worldMatrix-class') for more details on the patchĬoordinates system. Location ( i.e., coordinates) of the center of the patches. Pxcor and pycor, representing the spatial

PatchesĪre represented as matrix objects with two columns Patches cannot move whereas turtles can move. There are two types of agents in NetLogoR: the patchesĪnd the turtles. It represents a two dimensional landscape,ĭivided into a grid of square patches ( i.e., the matrix cells) WorldArray object (similar to an array which WorldMatrix object (similar to a matrix) or a