I am trying to figure out how to do a styling of features on a mapi qgis, that is a sort of hybrid between the categorized and graduated styling.
I am doing a map of road trees in a city, and each tree is tagged with the species of the tree. There are about 40 different species among the 17000 trees in the attribute table.
What I would like to do is, instead of doing a simple color-coded categorized map, i would like to style the trees so that the least common species in the attribute table is the lightest in color, and the most popular species is the darkest in color.
Is this achievable?