Into the Nth Dimension - PostGIS - page 382

How to do it...
Now that we have our data paired down, we will revisit our short outline of tasks.
1. Convert the point cloud to Voronoi polygons.
2. Attribute polygons with the color.
3. Render polygons to raster.
Converting the point cloud to Voronoi polygons
ConvertingourpointstoVoronoipolygonsiswellcoveredin Chapter4 , Working with
Vector Data - Advanced Recipes ,inthe Using external scripts to embed new func-
tionality in order to calculate a Voronoi diagram recipe.Inthisrecipe,wewillusethat
function as a simple interpolator for between the points of our point cloud.