It is particularly useful for analyzing the distribution of organisms to elucidate geographic and ecological patterns. Comparisons of some of the different systems can be found on:ĭIVA-GIS is a free computer program for mapping and analyzing spatial data. In addition to ARC-GIS which is the licenced software supported at UWA there are a number of open source GIS systems which can be installed for free. These sites include extensive lists of GIS software:
