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Turn off - Natural Earth polygon boundaries

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bkennedy

07 Dec, 2012 11:04 PM

Forgive me if this is a newbie GIS/map question, but I am working on a map where I'd like a good global land database without any country boundaries.

I added the Natural Earth 10M land layer from the MapBox database and once I style that everything shows up well.

However, there are some big diagonal lines that cut through Mexico and SA. I suspect these are seams of polygon lines built into the data, but I was wondering how to disable them either in the data, or in the styling.

See my screenshot example - http://d.pr/i/w3Rj

Thanks for any help of tutorials you can point me towards if this is already covered somewhere.

1. Support Staff 2 Posted by Dane on 08 Dec, 2012 12:39 AM

   

   Remove any line styles you have on that layer and the thin gray edges will go away. Then you will see faint blue (the background) "shining" through. To get rid of that add polygon-gamma:.4 to you style for that layer. If you still see faint lines try a lower gamma like .3.

   Dane

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2. 3 Posted by bkennedy on 09 Dec, 2012 12:44 AM

   

   Thanks for the tip Dane. I removed all line styles and set the polygon-gama:.4 and .3, but the line is still visible. Faintly so, but I can't help but noticing it.

   example:
   http://d.pr/i/dwFg

   Maybe I'm going about this the wrong way. Is there another land dataset I should use that isn't divided up along these arbitrary shapes? I know this is a very minor issue, I'm just trying to make sure I'm starting with a good professional base. Thanks!

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3. Support Staff 4 Posted by Dane on 10 Dec, 2012 08:04 PM

   

   Brian,

   I'm sorry, I cannot see any faint lines anymore. If you can somehow, then just set the gamma lower, like .1. However, beware, do not set it to 0, since that will trigger a bug. The lowest valid value is something like 0.000001.

   As far as a better way/better data - sure there are lots of options. I'm sure there are datasets around that do not have these arbitrary divisions. Also you could "merge" all the polygons in the shapefile using a tool like QGIS. You just need to be aware that performance will suffer slightly if your polygons are contiguous and really large.

   Dane

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4. Dane closed this discussion on 12 Dec, 2012 06:43 PM.

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