Disaggregate polygon as homogenous raster cells -- psuedo dasymetric mapping

Discussion created by gverutes on Feb 14, 2012
I am working with some census population data and trying to rasterize and then disagreggate each census tract polygon into homogeneous raster cells (each has same value).

For example, if the polygon contains a total population of 100 and when it's rasterized it becomes 10 cells, then I want each cell to have a value of 10 (10cells x 10people = 100 people).  I intend to do dasymetric mapping in the future using land cover to distribute the people, but have a tight deadline and need something basic by Friday.

Does anyone know a tool in Arc or QGIS that can disaggregate like this?  I'm thinking zonal or focal stats, but not sure...