<br><font size=2 face="sans-serif">I am able to display shape file polygons
in GrADS. However, I would like to be able to color-fill the component
polygons according to a value, say, temperature. Is this possible? If so,
please share how to do it.</font><br><br><font size=2 face="sans-serif">I can draw all the lines with the 'shp_lines....'
command, and an overall/inclusive filled polygon with the 'shp_polyf...'
command, specifying a single color with the 'set line...' command. However,
I want to be able to control individual shape poly fills within the inclusive
boundaries, such as states/provinces, of the shape file. I am currently
experimenting with the "admin98" set. The associated .dbf file
contains 14 columns/fields of geographical data, including what appear
to be unique identifiers (US20, USA-KAN, etc.).</font><br><br><font size=2 face="sans-serif">The command line output indicates the
following syntax, with 1 to 3 arguments:</font><br><font size=2 face="sans-serif">Usage: shp_polyf shapefile [object]</font><br><br><font size=2 face="sans-serif">How do I specify the object? Is the
object the 2nd argument? What is the 3rd argument, and how do I specify
it?</font><br><br><font size=2 face="sans-serif">The idea is that my script would read
a text file as input, where individual shapes (such as state/province boundaries)
are associated with temperature or some other variable.</font><br><br><font size=2 face="sans-serif">I am using GrADS v1.9.0-rc1 (installed
from OpenGrADS), on a Windows XP platform.</font><br><br><font size=2 face="sans-serif">Any help on this would be appreciated.</font><br><br><font size=2 face="sans-serif">Stephen McMillan</font><BR>
<BR>
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