Alberto Pettazzi wrote: > <font face="Times New Roman">Hi > everybody!<br> > <br> > I have 2 files, containing u and v component of wind vector > respectively. Is there any simple way to plot the wind > field?<br> > <br> > thank you as usual,<br> > </font> > <div class="moz-signature">-- <br>
[please post in plain text, html makes it hard for some of us to read...] Use the d.rast.arrow module. See the help page for conversion of u,v to magnitude,direction. (assuming you can make u,v into raster maps; what form is the data in?) d.rast.arrow screenshot here: http://grass.osgeo.org/screenshots/raster.php In Matlab this is known as a quiver plot, here is a addon for Octave to do that with free software: http://octplot.sourceforge.net/quiver.html I had thought for a while to add to d.rast.arrow wind barb rendering, and with the advent of GDAL reading the WMO's GRIB format there is a bit more reason to do that. For now the zyGrib program is nice to look at those: http://zygrib.free.fr/ Hamish _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
