artemp/trac2github — Issue #656: Add support for determining empty tiles
Author: artemp
Created: 2011-10-09 20:45:32+00:00
State: open
Labels: Agg_Renderer

We are rendering some desert terrains where 90% of the generated tiles are empty, i.e. just background color without any objects. Is it possible to create a feature which tells Mapnik to not render (creat file) the requested image if it is going to be empty?

Currently we are searching (using hash value) and removing the empty images after the rendering process, which is time consuming.

Thank you.