Creating many shades of colors for your Agents

[James Steiner]

As mentioned in another thread, below is a link to a demo in the modeling commons that shows two ways of generating colors for large numbers of agents. The original code was lost, but is recreated here.

http://modelingcommons.org/browse/one_model/7037

The demo is runnable in the browser.

Here is the code for one of the methods.

This reporter converts a number (like a WHO number) into a NetLogo color, alternating between dimmer and brighter versions of the basic colors, with the difference increasing in intensity as the number increases.

to-report deep-color-1 [ value ]
  report (
    red + 10 * (value mod 13) ;; 13 base netlogo colors (not gray)
    ;; shift up or down
    +  .5 * ( (int (value / 13)) mod 2 * 2 - 1) ;; alternate -1, +1
    ;; increase difference (gets brighter and darker)
    * (1 + int ( value / ( 2 * 13 )))
    )
end