<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>This question has already been answered many times in the forum. Here are just a few threads to choose from (search string was "site:gradsusr.org 365 calendar sdfopen") :</div><div><br></div><div><a href="http://gradsusr.org/pipermail/gradsusr/2009-December/010064.html">http://gradsusr.org/pipermail/gradsusr/2009-December/010064.html</a></div><div><a href="http://gradsusr.org/pipermail/gradsusr/2009-April/008489.html">http://gradsusr.org/pipermail/gradsusr/2009-April/008489.html</a></div><div><a href="http://gradsusr.org/pipermail/gradsusr/2009-January/008103.html">http://gradsusr.org/pipermail/gradsusr/2009-January/008103.html</a></div><div><a href="http://gradsusr.org/pipermail/gradsusr/2011-April/013123.html">http://gradsusr.org/pipermail/gradsusr/2011-April/013123.html</a></div><div><br></div><div>The error message delivered by GrADS is carefully written to give you the information you need -- you must write a descriptor file to open this file with GrADS. Your descriptor file must have the following entries:</div><div>DSET</div><div>TDEF</div><div>OPTIONS 365_day_calendar</div><div>The link to the documentation in the error message shows you how to create these entries, and help you decide whether you need to use 'xdfopen' or the 'open' command. If the documentation is incomplete in any way, I welcome suggestions for improvements. </div><div><br></div><div>If you read the documentation carefully, and go through the previous emails on this subject, and still don't understand what to do, then please follow these guidelines:</div><div><br></div><div>Include the version of GrADS you are running, and the OS you are running it on.</div><div>Include the output from ncdump -c on your netcdf file</div><div>Include the descriptor file you've written</div><div>Include the complete text of your GrADS session including the error message</div><div><br></div><div>This is the last time I will answer this question. <br>--Jennifer</div><div><br></div><div><br></div><div><br></div><div><br></div><div><div>On Jun 13, 2011, at 12:53 PM, Tummuri, Spandana wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><font face="Book Antiqua, serif" size="2"><div><font color="#17365D">Hello Everyone,</font></div><div><font color="#17365D"> </font></div><div><font color="#17365D">I was wondering if one of you would be able to tell me how you addressed this issue.</font></div><div><font color="#17365D"> </font></div><div><font color="#17365D">I am not very good at GRADS programming. I only needed to use it to open a “.nc” file and get some values averaged over a period of time. So I typically use the following three commands in grads.</font></div><div><font color="#17365D"> </font></div><div><font color="#17365D">Sdfopen “filename.nc”</font></div><div><font color="#17365D">Run monmask.gs N ……………….(N = month)</font></div><div><font color="#17365D">d ave(aave(pr*mmask, lon=lon1, lon = lon2, lat = lat1, lat = lat2),t=time1,t=time2)</font></div><div><font color="#17365D"> </font></div><div><font color="#17365D">This worked for a few files but when I tried to use it on some others, I get the following error</font></div><div><font color="#17365D"> </font></div><div><font color="#17365D"> </font></div><div><font color="#17365D">ga-> sdfopen pr_A1.nc</font></div><div><font color="#17365D">Scanning self-describing file: pr_A1.nc</font></div><div><font color="#17365D">SDF Error: 365 day calendars are no longer supported by sdfopen.</font></div><div><font color="#17365D"> To open this file with GrADS, use a descriptor file with</font></div><div><font color="#17365D"> a complete TDEF entry and OPTIONS 365_day_calendar.</font></div><div><font color="#17365D"> Documentation is at<span class="Apple-converted-space"> </span><a href="http://iges.org/grads/gadoc/SDFdescriptorfile.html"><font color="#0000FF"><u>http://iges.org/grads/gadoc/SDFdescriptorfile.html</u></font></a></font></div><div><font face="Calibri, sans-serif" size="2" color="#17365D"> </font></div><div><font color="#17365D">When I compared NCDUMP for the files for which “sdfopen” worked with the those for which “sdfopen” did not work, I noticed that the calendar has to be gregarian for sdfopen to work.</font></div><div><font color="#17365D"> </font></div><div><font color="#17365D">Can you tell me how I can open files that have “noleap” calendars and work around the 365_day_calendar issue?</font></div><div><font color="#17365D"> </font></div><div><font color="#17365D">I greatly appreciated your help in this matter.</font></div><div><font color="#17365D"> </font></div><div><font color="#17365D">Thank you.</font></div><div><font color="#17365D">Spandana</font></div><div><font face="Calibri, sans-serif" size="2" color="#17365D"> </font></div><div><font face="Calibri, sans-serif" size="2"> </font></div></font>_______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br><a href="http://gradsusr.org/mailman/listinfo/gradsusr">http://gradsusr.org/mailman/listinfo/gradsusr</a><br></div></blockquote></div><br><div apple-content-edited="true"> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; font-size: 12px; "><div>--</div><div>Jennifer M. Adams</div><div>IGES/COLA</div><div>4041 Powder Mill Road, Suite 302</div><div>Calverton, MD 20705</div><div><a href="mailto:jma@cola.iges.org">jma@cola.iges.org</a></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></div> </div><br></body></html>