zjzj 1-8

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zizi okal (Author)

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Click to Run Model

to setup
  clear-all
  ask patches [ set pcolor blue]
  setup-turtles
end 

to setup-turtles
   create-turtles 20
end 

to go
 
 ask turtles [ setxy random-xcor random-ycor ]
 ask turtle 6 [ pendown set color yellow]
 ask turtle 9 [ pendown set color pink]
end 

to move-turtles
  ask turtles [ right random 360 forward 1]
end 

globals [halfedge]

to setup-corner
  ca                                              ;; clear everything
  ask patches[
    ;; if patches are between (0,0) to (0,edge)...
    if ( pxcor = 0 and pycor >= 0 and pycor <= edge )
      [set pcolor red]                                 ;; ... draws left edge in red
    ;; if patches are between (edge,0) to (edge,edge)...
    if ( pxcor = edge and pycor >= 0 and pycor <= edge )
      [set pcolor red]                                 ;; ... draws right edge in red
    ;; if patches are between (0,0) to (edge,0)...
    if ( pycor = 0 and pxcor >= 0 and pxcor <= edge )
      [set pcolor red]                                 ;; ... draws bottom edge in red
    ;; if patches are between (0,edge) to (edge,edge)...
    if ( pycor = edge and pxcor >= 0 and pxcor <= edge )
      [set pcolor red]                                 ;; ... draws upper edge in red
    ]
end 

to setup-center
  ca                                              ;; clear everything
  ;; set halfedge as edge divided by two. in case edge is an odd number,
  ;; halfedge get the integer value of the division.
  set halfedge int (edge / 2)
  ask patches[
    ;; if patches are between (-halfedge,-halfedge) to (-halfedge,halfedge)...
    if (pxcor = (- halfedge) and pycor >= (- halfedge) and pycor <= (0 + halfedge) )
      [set pcolor blue]                                ;; ... draws left edge in blue
    ;; if patches are between (halfedge,-halfedge) to (halfedge,halfedge)...
    if ( pxcor = (0 + halfedge) and pycor >= (- halfedge) and pycor <= (0 + halfedge) )
      [set pcolor green]                                ;; ... draws right edge in blue
    ;; if patches are between (-halfedge,-halfedge) to (halfedge,-halfedge)...
    if ( pycor = (- halfedge) and pxcor >= (- halfedge) and pxcor <= (0 + halfedge) )
      [set pcolor yellow]                                ;; ... draws bottom edge in blue
    ;; if patches are between (-halfedge,halfedge) to (halfedge,halfedge)...
    if ( pycor = (0 + halfedge) and pxcor >= (- halfedge) and pxcor <= (0 + halfedge) )
      [set pcolor pink]                                ;; ... draws upper edge in blue
    ]
end 

to setup-patches
  clear-all
  setup-turtles
  ask patches
[ ifelse pxcor > 0
      [ set pcolor green ]
      [ set pcolor red ] ]
end 

to turtlez
  ca
  ask patches  [
  if (pxcor > 0) or (pycor > 0) 
            [ set pcolor orange ]         ;; patches turn green except in lower-left quadrant  
  if (pxcor > 0) and (pycor > 0)
  [ set pcolor green ]  ;; the upper-right quadrant of
                       ;; patches turn blue
if (pxcor < 0) and (pycor < 0)
  [ set pcolor yellow ]
  ]
end

There is only one version of this model, created over 13 years ago by zizi okal.

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