Hi, Am 19. Januar 2021 06:28:37 MEZ schrieb Dheeraj Chand <dhee...@dheerajchand.com>: >I have a shapefile of US counties in Texas. A map that I am trying to conceive >would 1) separate the polygons to add some distance / whitespace between the >constituting polygons 2) preserve their relative positioning 3) color the >polygons on a graduation of average income and 4) while preserving shapes, >increase or decrease size based on population . > >Am I crazy, is there such a map ? What would it be called or described as?
This generally called a cartogram or a chorogram: https://en.wikipedia.org/wiki/Cartogram?wprov=sfla1 Today the most used method, AFAIK, is this one: https://www.pnas.org/content/101/20/7499 >How could I make this in GRASS? You can't make this in GRASS GIS. You can find code from one of the authors of above paper here: http://www-personal.umich.edu/~mejn/cart/. QGIS used to have plugin for this: https://plugins.qgis.org/plugins/cartogram/ Don't know if that is still active. Then there is scapetoad: http://chorogram.choros.ch/scapetoad/chorogram.php In R you can use Rcartogram: https://cran.r-project.org/web/packages/cartogram/index.html Geoda and others also offer this functionality. Moritz _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
