Assigning a color to each one would indicate qualitative/quantitative 
classification, but using random colors could result in two adjacent shapes 
receiving the same color. Perhaps if you instead started your coloring at a 
random shape in the set, and then progressed from there. Just throwing ideas in 
the air.

-----Original Message-----
From: Andrea Aime [mailto:[email protected]]
Sent: Friday, May 21, 2010 9:51 AM
To: Michael Bedward
Cc: [email protected]
Subject: Re: [Geotools-gt2-users] ColorMap on polygons

Michael Bedward ha scritto:
> On 21 May 2010 20:12, Andrea Aime wrote:
>> A tool could be used to load the data, build a connectivity map,
>> assign the colors, and generate a SLD using FID filters to assign
>> the 5 colors to the different polygons.
>
> It would be cool to have something like that wouldn't it ?  It sounds
> like the sort of thing that would make a nice SoC project or similar
> sometime.

Yep, would be a nice tool. Could be useful for uDig too.

There is one catch however. Not having a random color might induce
people looking at the map to think there is some sort of
qualitative/quantitative classification.

I think for this case having a RandomColor filter function would
be more appropriate. I guess it might just take no arguments,
and/or maybe take a list of colors to choose from.

Cheers
Andrea


--
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

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