Hey,
here is my report for the last week. I had to focus on bug fixing in the temporal vector algebra, due to some difficult and time intensive bugs. I found them, when I tested some illustrative examples for the algebra. Therefore I was not able to start with the raster algebra. This new topic will start in the next week. In addition I will finish the documentation for the temporal vector algebra.
Greetings
Thomas
Link to project wiki page:http://grasswiki.osgeo.org/wiki/GRASS_GSoC_2013_Temporal_GIS_Algebra_for_raster_and_vector_data_in_GRASS
Link to project repository: https://code.google.com/p/grass-gis-temporal-algebra/