artemp/mapnik — Issue #818: shape.input skips rendering a few lines
Author: artemp
Created: 2011-10-11 16:37:45+00:00
State: open
Labels: Agg_Renderer

Test data here: http://dl.dropbox.com/u/37877224/trails.zip

Upstream report here: http://support.mapbox.com/discussions/tilemill/93-missing-lines-not-rendered-from-shapefile

Notice in that report that the label is there but not the line - so this appears to be a bug in the LineSymbolizer agg rendering code.

This is the data shown in QuantumGIS

[[Image(http://f.cl.ly/items/1l0y302v0M2d0q1H2l16/Screen%20shot%202011-08-12%20at%208.11.35%20PM.png)]]

And this is rendering by Mapnik using Quantumnik (missing lines are top right and lower left):

[[Image(http://f.cl.ly/items/3C1w311N0f1v2T111c2k/Screen%20shot%202011-08-12%20at%208.11.12%20PM.png)]]