On Nov 30, 2007, at 7:25 AM, [EMAIL PROTECTED] wrote:
From: Tim Michelsen <[EMAIL PROTECTED]>
Date: November 30, 2007 3:49:38 AM MST
To: [email protected]
Subject: [GRASS-user] thematic vector map with non-numeric field
values
Hello,
how do I disply a thematic map in GRASS for vector attributes that
don't have
numeric values?
I tried d.vect.thematic but it would only accept numeric values.
If I have a vector layer with all communities of a country and a
attribute
column with the community name and another column with the name of the
corresponding federal state, how do I display for instance a
thematic map with
individual values based on the column with the sate names?
I managed to do this on QGIS. But is it also possible in GRASS itself?
Thanks and kind regards,
Tim
Create an attribute field that either has a number for each value of
the string field or has an RGB triplet for each value. With the first
method, you can use d.vect.thematic. With the second option, you can
simply use d.vect specifying the field with the RGB triplet for color.
Michael
____________________
C. Michael Barton, Professor of Anthropology
Director of Graduate Studies
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University
Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>
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