On Sat, Sep 06, 2003 at 02:29:23AM +0300, Gutza wrote:
Tomasz Wegrzanowski wrote:
http://meta.wikipedia.org/wiki/The_polygon_map
Political maps use 2-level coloring schemes.
In what context? AFAIK, generally people use 4 colours, typically pastel colours for political maps.
From what I can see it my atlas they use many many more.
Main color is selected as to avoid 2 neighbour countries having the same color. It's shade is selected randomly.
Again, in what context? Is your mail a proposal or does it describe the current state? In any case, random colours doesn't sound right.
It's the current state - 2-level coloring is used. Look at the globe on http://meta.wikipedia.org/wiki/The_polygon_map
It's just that better colors are needed. What's needed is N sets of colors such that: * if color c1 belong to set s1, and color c2 belong to set s2, then they contrast very well and we can color neighbour countries with them * if colors c1 and c2 belong to the same set, there's still pretty big probablity that they look distinguishable.
Because of requirement 1 we can't make too many color sets. Because of 2 they should have more than just 1 color.
Anyway 2-level coloring looks much better than either: * totally random coloring * non-conflicting coloring with 5 colors