azavea/geotrellis — pull request #207 by ahinz (2012-10-08 14:04:51+00:00)
Title: Add in Convolution Operation

Adds an operation that will convolve a given point spread fn
(kernel) with a raster. It also include a simple Gaussian
operation to create a raster with a Gaussian distribution

This commit also gives trellis the ability to perform kernel
density operations on rasters (the previous kernel density
operation only burned points onto the raster)

Also includes tests.

This is the first of a few commits that will hopefully replace
the old kernel density with a better tested implementation