<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">GrADS does not handle unstructured triangular grids. The only way you can look at this data with GrADS is to convert it into station data format and treat each grid point as an individual observation. --Jennifer<div><br><div><br><div><div>On Aug 7, 2012, at 9:35 AM, Yuji Funakoshi wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0pt; margin-left: 0in; "><span style="FONT-FAMILY:'Calibri','sans-serif'"><font size="3">Hello,</font></span></div><p style="MARGIN:0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif'"><font size="3"> </font></span></p><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0pt; margin-left: 0in; "><span style="FONT-FAMILY:'Calibri','sans-serif'"><font size="3">I am a user of ADCIRC and quite new to GrADS. Since I want to display water level, stored on unstructured triangular grid in NetCDF format, on GrADS, I create a .ctl file. I can open it by using "xdfopen", however, a plot doesn't display correctly. It's probably due to a wrong definition of XDEF and YDEF (I use LEVELS for XDEF and YDEF) on the .ctl file. </font></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0pt; margin-left: 0in; "><span style="FONT-FAMILY:'Calibri','sans-serif'"><font size="3">Although I'm not sure whether GrADS can display unstructured triangular grid correctly, does anyone know how to define XDEF and YDEF for unstructured triangular grid? Please let me know.</font></span></div><p style="MARGIN:0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif'"><font size="3"> </font></span></p><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0pt; margin-left: 0in; "><span style="FONT-FAMILY:'Calibri','sans-serif'"><font size="3">Thanks,</font></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0pt; margin-left: 0in; "><span style="FONT-FAMILY:'Calibri','sans-serif'"><font size="3">Yuji</font></span></div><br clear="all"><br>-- <br>Yuji Funakoshi, Ph.D.<br>Coast Survey Development Laboratory<br> National Oceanic and Atmospheric Administration<br>1315 East West Highway - N/CS13<br>Silver Spring, MD 20910-3282<br>ph. (301) 713-2809 X113<br>fax (301) 713-4501<br><a href="mailto:yuji.funakoshi@noaa.gov" target="_blank">yuji.funakoshi@noaa.gov</a> <br> _______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>http://gradsusr.org/mailman/listinfo/gradsusr<br></blockquote></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><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"></span></span></div></span> </div><br></div></div></body></html>