Dasymetric mapping is for phenomena that have uneven distribution that has been improve from the choropleth mapping technique. For determine the cause of uneven distribution, this technique where used other geographical factors. The symbols not follow the boundaries in the dasymetric map. The objective of the dasymetric mapping is to show uniform quantities regardless of unit area boundaries. The dasymetric map is used the intersection of two layer in the same database to get more precise of spatial data. It uses the same type of data as Choroplethic mapping, but involves some analysis about districts. For example, it not assumes homogeneity within districts.
Sources from wikipedia
Tiada ulasan:
Catat Ulasan