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Mention line simplification

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Eric Fischer 2014-09-26 15:27:20 -07:00
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@ -28,6 +28,9 @@ Example
Geometric simplifications
-------------------------
At every zoom level, line and polygon features are subjected to Douglas-Peucker
simplification to the resolution of the tile.
For point features, it drops 1/2.5 of the dots for each zoom level above the base.
I don't know why 2.5 is the appropriate number, but the densities of many different
data sets fall off at about this same rate.