azavea/geotrellis — pull request #297 by joshmarcus (2013-01-02 18:35:24+00:00)
Title: Improve usability of raster rendering operations.

This pull request adds some helper operations to make it easier for a new GeoTrellis developer to render a raster. It adds a new SimpleRenderPng operation that simply takes a color ramp and a number of class breaks, which it uses to generate quantile class breaks and the color ramps behind the scenes. It also adds a set of default color ramps.

This pull request also adds comments and scaladoc to existing operations, and renames the render operation that expects a raster with RGBA integer values.