After finished preparing the data in ArcGIS, I imported the finished map of the population density into IDRISI and then converted the vector polygons into raster for analysis purposes The map was created in ArcGIS and later imported into IDRISI and converted to raster format for the purpose of the analysis. The bus routes, peak hour bus routes, and the skytrain route data is first prepared in ArcGIS and then imported to IDRISI. All the vector lines are then converted to raster. Because the B-line bus routes, the locations of bus exchange and skytrain stations are not available anywhere, I digitized these data in ArcGIS first and then converted to IDRISI. The raster version of the density map of Vancouver . The DA census data and the DA polygon are used to generate this map. Translink transit data I digitized. Please click on the image above to see a larger image. Different colours correspond to different mode of public transit: Source.