azavea/geotrellis — pull request #244 by joshmarcus (2012-12-05 14:52:04+00:00)
Title: Implement and clean up zonal operation

This pull request implements zonal raster operations as subclasses of the new tiled polygonal zonal summarization class implemented with the new feature operations. It also cleans up and fully implements the rasterization code for all geometries.