Re: Map Colors (was: Re: New <AREA> syntax proposal)

To: Jeff de la Beaujardiere <delabeau@iniki.gsfc.nasa.gov>
Subject: Re: Map Colors (was: Re: New <AREA> syntax proposal)
From: "Martin J. Duerst" <mduerst@ifi.unizh.ch>
Date: Wed, 11 Jun 1997 15:46:15 +0200 (MET DST)
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From www-html-request@www10.w3.org Wed Jun 11 09: 47:23 1997
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On Wed, 11 Jun 1997, Jeff de la Beaujardiere wrote:

> Put another way, if you list the requirements for all possible maps, the
> requirement is never greater than 4, so 4 is the maximum.

Four is the magic number when each "territory" in the map is a single
"blob". In many cases, this cannot be guaranteed. An example is
political maps. As specific examlpes, there is a "blob" (a single
vilage) of Germany completely surrounded by Switzerland. This wouldn't
actually necessitate a new color, because Germany and Switzerland
abound anyway. But states (Cantons) inside Switzerland are more
complicated, and similar things will exist elsewhere.

Regards,	Martin.

References:

Re: Map Colors (was: Re: New <AREA> syntax proposal)

From: Jeff de la Beaujardiere <delabeau@iniki.gsfc.nasa.gov>

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