<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7654.12">
<TITLE>Problem posting nps grib2 data in grads</TITLE>
</HEAD>
<BODY>
<!-- Converted from text/rtf format -->
<P><FONT SIZE=2 FACE="Arial">Hello</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">I am having difficulty in posting in GrADS my grib2 data on a north polar stereographic grid</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">I placed all relevent files and information in the directory at: </FONT>
<BR><A HREF="http://collaboration.cmc.ec.gc.ca/cmc/CMOI/grads/regional/"><U><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">http://collaboration.cmc.ec.gc.ca/cmc/CMOI/grads/regional/</FONT></U></A>
</P>
<P><FONT SIZE=2 FACE="Arial">From this site you can see my grib2 file: called reg_00_024.grib2</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">I am using grads-2.0.a5</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">I made the following ctl and idx files (available that above site)</FONT>
<BR><FONT SIZE=2 FACE="Arial"> reg_00_024.grib2.ctl</FONT>
<BR><FONT SIZE=2 FACE="Arial"> reg_00_024.grib2.idx</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">When I run the following simple script: </FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">*start sample script</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">'open reg_00_024.grib2.ctl'</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">'clear'</FONT>
<BR><FONT SIZE=2 FACE="Arial">'set lon 230 310'</FONT>
<BR><FONT SIZE=2 FACE="Arial">'set lat 30 70'</FONT>
<BR><FONT SIZE=2 FACE="Arial">'set mpvals 235 305 35 65' </FONT>
<BR><FONT SIZE=2 FACE="Arial">'set mproj nps'</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">'set lev 850'</FONT>
<BR><FONT SIZE=2 FACE="Arial">'d HGTprs'</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">'set lev 500'</FONT>
<BR><FONT SIZE=2 FACE="Arial">'d TMPprs'</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">*end sample script</FONT>
</P>
<BR>
<BR>
<P><FONT SIZE=2 FACE="Arial">I get the following messages: </FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">Notice: Implied interpolation for file reg_00_024.grib2.ctl</FONT>
<BR><FONT SIZE=2 FACE="Arial"> Interpolation will be performed on any data displayed from this file</FONT>
<BR><FONT SIZE=2 FACE="Arial">Cannot contour grid - all undefined values </FONT>
<BR><FONT SIZE=2 FACE="Arial">Cannot contour grid - all undefined values </FONT>
</P>
<BR>
<BR>
<P><FONT SIZE=2 FACE="Arial">I cannot get my data to display. </FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">Thanks in advance for your suggestions and assistance. </FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">Lewis</FONT>
</P>
</BODY>
</HTML>