If you have u and v wind components in your binary files, then all you need to do is type "d mag(u,v)" (assuming u and v are the names of your zonal and meridional wind components). Make sure gxout is set to contour or shaded. You can simply plot isotachs for just one or the other of the wind components by just typing in "d u" or "d v" also. Hope this helps.<br>
<br>Jeff Duda<br><br><div class="gmail_quote">On Sat, Nov 14, 2009 at 4:51 PM, Basit Khan <span dir="ltr"><<a href="mailto:bak41@student.canterbury.ac.nz">bak41@student.canterbury.ac.nz</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi friends,<br>
I am new to GrADS. Just wondering does anybody know how to plot isotachs<br>
inGrADS.<br>
Cheers,<br>
<br>
--<br>
---<br>
Basit A. Khan<br>
PhD Candidate<br>
Centre for Atmospheric Research<br>
Department of Geography<br>
University of Canterbury Te Whare Wananga o Waitaha Private Bag 4800<br>
Christchurch 8020, New Zealand<br>
Tel: (643) 364 2987 Ext. 3088<br>
Fax: (643) 364 2907<br>
<a href="mailto:bak41@student.canterbury.ac.nz" target="_blank">bak41@student.canterbury.ac.nz</a><br>
</blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Iowa State University<br>Meteorology Graduate Student<br>3134 Agronomy Hall<br><a href="http://www.meteor.iastate.edu/~jdduda">www.meteor.iastate.edu/~jdduda</a><br>