<div class="gmail_quote">On Wed, Mar 4, 2009 at 1:37 AM, sreenivas desamsetti <span dir="ltr"><<a href="mailto:sreeds82@yahoo.com">sreeds82@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div><div style="font-family:times new roman,new york,times,serif;font-size:12pt;color:#bf005f"><table width="100%" cellspacing="0" cellpadding="0" align="center"><tbody><tr><td height="252px" bgcolor="#eff3f4" background="?ui=2&ik=ee81e8607a&view=att&th=11fd0350962d6c83&attid=0.1.1&disp=emb&zw" valign="top">
<table width="100%" style="table-layout:fixed" cellspacing="0" cellpadding="0" align="center"><tbody><tr><td width="10"> </td><td valign="top" style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap"><table width="100%" style="white-space:normal" cellspacing="0" cellpadding="0">
<tbody><tr><td height="10"> </td></tr><tr><td><font face="Arial,sans-serif" size="2" color="#bf005f" style="font-family:Arial,sans-serif;font-size:12px;color:#bf005f"><div style="text-align:undefined"><font><font style="font-family:Arial,sans-serif;font-size:12px;color:rgb(191, 0, 95)" size="2" color="#bf005f" face="Arial,sans-serif">Dear Sir/ <span>Madam</span>,<br>
I have u, v, and omega values over the globe.<br>Could you please tell me how to plot the
Walker and Hadley circulations.<br>If any script will be available please share with me.<br>I installed opengrads also as to get psi variable is easier in this.</font></font></div></font></td></tr></tbody></table></td></tr>
</tbody></table></td></tr></tbody></table></div></div></blockquote><div><br></div><div><br></div><div>What you want is the "psim" UDF which computes the mean meridional streamfunction. As of this writing it only exists in the form of a classic UDF (only works with GrADS 1.9 and earlier). It is in the list of UDFs to be included as an OpenGrADS extension for GrADS v2. For now, you can find sources for the classic UDF by browsing the OpenGrADS UDF repository:</div>
<div><br></div><div> <a href="http://opengrads.cvs.sourceforge.net/viewvc/opengrads/contrib/legacy/udf/psim/">http://opengrads.cvs.sourceforge.net/viewvc/opengrads/contrib/legacy/udf/psim/</a><br></div><div><br></div>
</div><div> Arlindo</div><br>-- <br>Arlindo da Silva<br><a href="mailto:dasilva@alum.mit.edu">dasilva@alum.mit.edu</a><br>