This year's PostGIS day, I decided to celebrate with a little Conway's Game of Life fun inspired by Anita Graser's recent blog series Experiments with Game of Life.
The path I chose to simulate the Game of life is a little
different from Anita's. This variant exercises PostGIS 2.1+ raster mapalgebra and PostgreSQL 9.1+ recursive queries. Although you can do this with PostGIS 2.0, the map algebra syntax I am using is only supported in PostGIS 2.1+. My main disappointment is that because PostGIS does not yet support direct generation of animated gifs I had to settle for a comic strip I built unioning frames of rasters instead of motion picture. Hopefully some day my PostGIS animated gif dream will come true.
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