Integrating NetLogo and Java tutorial

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Ahdekker Anthony Dekker (Author)

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extensions 

Tagged by Anthony Dekker almost 11 years ago

tutorials 

Tagged by Anthony Dekker almost 11 years ago

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NETLOGO/JAVA INTEGRATION EXAMPLE

This example (a simple diffusion example) is explained in the tutorial at http://scientificgems.wordpress.com/2013/12/11/integrating-netlogo-and-java-part-1/

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Explanation

This model is associated with a tutorial at http://scientificgems.wordpress.com/2013/12/11/integrating-netlogo-and-java-part-1/

Posted almost 11 years ago

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extensions [diffusion]

globals [
  grid ;; Java object with a type defined by the diffusion extension
  java-loop?
]

patches-own [
  value ;; the more advanced Java code depends on this being variable #5
]

;; code for SETUP button

to setup
  clear-all
  
  set java-loop? false
  
  ;; use extension reporter to set up a "clone" of the patch grid
  set grid (diffusion:init-grid world-width world-height min-pxcor min-pycor)
  
  ;; set up initial values in both patches and grid
  ask patches [
    set value (random-float 9.9)
    if (not java-loop?) [ diffusion:set-grid-cell grid pxcor pycor value ]
    set-patch-color
  ]
  
  if (java-loop?) [ diffusion:copy-patches-to-grid grid patches ]

  ;; show text dump of the grid
  show grid
  
  ;; some turtles
  crt 10 [
    setxy random-xcor random-ycor
    set shape "person"
    set color sky
    set size 4
  ]

  reset-ticks
end 

;; code for GO button

to go
  ;; perform several computation steps within the grid
  repeat 10 [
    diffusion:diffusion-step grid 0.01
  ]
  
  ;; copy modified grid data to the patches
  if-else (java-loop?) [ copy-grid-to-patches2 ] [ copy-grid-to-patches1 ]
  
  ;; have the turtles interact with the modified patches
  ask turtles [
    uphill value
  ]
  
  tick
end 

;; utility method (called twice) to set a patch color from a value

to set-patch-color
  set pcolor (30 + value)
end 

;; copy grid data to the patches: loop within NetLogo

to copy-grid-to-patches1
  ask patches [
    set value (diffusion:get-grid-cell grid pxcor pycor)
    set-patch-color
  ]
end 

;; copy grid data to the patches: loop within Java

to copy-grid-to-patches2
  diffusion:copy-grid-to-patches grid patches
  ask patches [
    set-patch-color
  ]
end 

There is only one version of this model, created almost 11 years ago by Anthony Dekker.

Attached files

File Type Description Last updated
diffusion.jar extension Required extension diffusion.jar almost 11 years ago, by Anthony Dekker Download
DiffusionExtension.java extension Java source code for extension almost 11 years ago, by Anthony Dekker Download
Integrating NetLogo and Java tutorial.png preview Preview for 'Integrating NetLogo and Java tutorial' almost 11 years ago, by Anthony Dekker Download

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