Hi all,
I’m trying to get my head around Grass (6.4.0) in linux for the first time, am playing around with a vector polygon map and have reached my first stumbleblock:
How do I color the polygons by the value of an attribute column (say population)? When looking in the layer manager window and clicking on “properties” of my layer,
it looks as if you can set the color based on z height of the vector map - but how do I tell Grass which attribute column that is Z?
Many thanks in advance,
Gustaf
–
Gustaf Rydevik, M.Sci.
tel: +46(0)703 051 451
address:Essingetorget 40,112 66 Stockholm, SE
skype:gustaf_rydevik
Hi all,
I’m trying to get my head around Grass (6.4.0) in linux for the first time, am playing around with a vector polygon map and have reached my first stumbleblock:
How do I color the polygons by the value of an attribute column (say population)? When looking in the layer manager window and clicking on “properties” of my layer,
it looks as if you can set the color based on z height of the vector map - but how do I tell Grass which attribute column that is Z?
In the GUI it’s the “Add various vector-based maps” (just to the right of the “Add vector map” button) and choose “Thematic layer”. In the dialog you can choose which attrib column and what color ramp to apply.
The CLI command is ‘d.vect.thematic’
···
--
Micha Silver
Arava Development Co. +972-52-3665918
[http://www.surfaces.co.il](http://www.surfaces.co.il)