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Re: Coloring labelled regions (or states) [message #92075 is a reply to message #92073]

Tue, 06 October 2015 09:20

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

>
> Helder writes:
>
>> Thanks David, I'll try that and see. I thought that there would be some clever algorithm based on distances between center of masses and number of neighbors...
>
> I'm sure there is. And, it probably works about as well as assigning
> random colors. :-)

With sufficient colors and a limited number of "connections" between
regions, I can envision an algorithm that removes "neighboring" colors
from a list of colors, before picking one at random. This is guaranteed
to be slow, though, depending upon how many regions you have. And, a lot
of paperwork to keep track of. I'd definitely give random a shot first.

Maybe random with color removal? Assign a random color. Remove that from
the list of colors, assign the next random color from the shortened
list, etc. Rinse and repeat. I can still envision situations that it
wouldn't work with.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Coloring labelled regions (or states) By: Helder Marchetto on Tue, 06 October 2015 05:39
		Re: Coloring labelled regions (or states) By: Phillip Bitzer on Tue, 06 October 2015 07:12
		Re: Coloring labelled regions (or states) By: Helder Marchetto on Tue, 06 October 2015 08:08
		Re: Coloring labelled regions (or states) By: Michael Galloy on Tue, 06 October 2015 08:18
		Re: Coloring labelled regions (or states) By: David Fanning on Tue, 06 October 2015 08:19
		Re: Coloring labelled regions (or states) By: Helder Marchetto on Tue, 06 October 2015 09:01
		Re: Coloring labelled regions (or states) By: Helder Marchetto on Tue, 06 October 2015 09:05
		Re: Coloring labelled regions (or states) By: David Fanning on Tue, 06 October 2015 09:10
		Re: Coloring labelled regions (or states) By: David Fanning on Tue, 06 October 2015 09:20
		Re: Coloring labelled regions (or states) By: Fabzi on Tue, 06 October 2015 09:38
		Re: Coloring labelled regions (or states) By: wlandsman on Tue, 06 October 2015 14:53

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