Please increase color count for city polygons

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Re: Please increase color count for city polygons

Postby jasonh300 » Mon Nov 19, 2012 3:40 am

jondrush wrote:According to the four color map theorem 4 is all you need for any map. Waze just needs to adjust their algorithm to fix the adjacent color problem. :)


Despite the motivation from coloring political maps of countries, the theorem is not of particular interest to mapmakers. According to an article by the math historian Kenneth May (Wilson 2002, 2), “Maps utilizing only four colours are rare, and those that do usually require only three. Books on cartography and the history of mapmaking do not mention the four-color property.”


This also breaks down if you have exclaves, which are extremely common with city borders who claim land for tax collection purposes.
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Please increase color count for city polygons

Postby jasonh300 » Mon Nov 19, 2012 8:36 am

jondrush wrote:Thus the smiley face. Come-on Jason, not enough caffeine?


I've been on Decaf for about a year now. :(


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Re: Please increase color count for city polygons

Postby jondrush » Mon Nov 19, 2012 2:35 am

According to the four color map theorem 4 is all you need for any map. Waze just needs to adjust their algorithm to fix the adjacent color problem. :)
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Re: Please increase color count for city polygons

Postby jondrush » Mon Nov 19, 2012 4:23 am

Thus the smiley face. Come-on Jason, not enough caffeine?
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Please increase color count for city polygons

Postby skbun » Sun Nov 18, 2012 8:38 pm

Now that the city layer has been updated again, so we know it's working, this request is a meaningful one to make.

Please increase the number of colors used to generate the city polygon layer (cities_p) if possible. I'm pretty sure the total number of colors is (6). If this could be increased to say, 16, I think it'd help worlds. :)

https://www.waze.com/editor/?zoom=5&lat ... FFTFTTTTFT

In highly concentrated numbers of cities, the palette is limited enough that we get a lot of 'cities with the exact same color touching one another' - which is even worse if city smears are involved. Since in the Waze client, the layer is gray no matter what the city (believe that's the cities_01 layer), the only utility for the colored polygon layer, that I know of, is to distinguish cities to make editing easier?
--
Also, when the cities/cities_p layer is applied in WME, there's some kind of opacity setting that I think is used to dull the color. That's not a bad thing, but if you compare

http://etiles6.waze.com/wms/wme?PROJECT ... HEIGHT=542

to

https://www.waze.com/editor/?zoom=5&lat ... FFTFTTTTFT

...you can see where dulling the color/opacity/whatever the setting is makes that gray city border go from 'somewhat visible' to 'virtually impossible to see'. If the original generation of the border of the polygon was pure black, I think at least in the WME adjusted layer, it'd be a dark gray.

* Even if the number of fill colors in the polygons can't be increased, making the border black before the opacity adjustment would make borders easier to see, in the cases where 'like fills touch'.

Thanks!
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