On Mar 4, 2010, at 1:27 AM, grass-dev-request@lists.osgeo.org wrote:
Date: Wed, 3 Mar 2010 23:26:59 -0800 (PST)
From: Hamish <hamish_b@yahoo.com>
Subject: Re: [GRASS-dev] future thematic cartography in GRASS [was:
Re: [GRASS GIS] #974: [Patch] add option to d.vect to make symbol size
proportionate to square root of size_column]
To: grass-dev@lists.osgeo.org, Moritz Lennert
<mlennert@club.worldonline.be>
Message-ID: <424434.72905.qm@web110014.mail.gq1.yahoo.com>
Content-Type: text/plain; charset=us-asciiMoritz wrote:
What is still missing right now is an easy way to display a
combination of color-classified and proportionately sized
symbols.by the way, WRT floating point raster maps there is a control in ps.map's
colortable instruction to show range bands instead of a smooth legend:"""
Adding the
discrete Y instruction will command the program to
treat the map as a categorical map. In this way the
legend can be created with discrete range bands instead
of a continuous gradient. You must use the r.category
or r.support module to set up the range labels first.
"""Hamish
Something to consider at this point. GRASS now has a lot of tools built into d.vect that allow for thematic mapping. This raises the question of whether we want to 1) enhance the thematic capabilities of d.vect or 2) continue down the road of a separate thematic module. I can see advantages and disadvantages of each approach.
Michael