Vector Attribute Display: Difference between revisions
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'''Q:''' Is it possible to display a vector (polygon) map so that colors are chosen based on an attribute column (not the "cat")? I assume this can be done through v.reclass with a rules file, but am hoping there is a simpler way. | '''Q:''' Is it possible to display a vector (polygon) map so that colors are chosen based on an attribute column (not the "cat")? I assume this can be done through v.reclass with a rules file, but am hoping there is a simpler way. | ||
'''A:''' For random colorization enjoy the -c flag. For precise colorization add a column containing RRR:GGG:BBB values (use v.db.update to quickly populate it) and then use the -a flag of | '''A:''' For random colorization enjoy the -c flag. For precise colorization add a column containing RRR:GGG:BBB values (use {{cmd|v.db.update}} to quickly populate it) and then use the -a flag of {{cmd|d.vect}}. | ||
See also: [[GRASS Vector Attributes]] | |||
[[Category:FAQ]] | [[Category:FAQ]] | ||
[[Category:Vector]] | |||
Latest revision as of 09:38, 5 March 2014
Q: Is it possible to display a vector (polygon) map so that colors are chosen based on an attribute column (not the "cat")? I assume this can be done through v.reclass with a rules file, but am hoping there is a simpler way.
A: For random colorization enjoy the -c flag. For precise colorization add a column containing RRR:GGG:BBB values (use v.db.update to quickly populate it) and then use the -a flag of d.vect.
See also: GRASS Vector Attributes