<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">It is possible to use PDEF to map curvilinear coordinates to a regular lat/lon grid, but I have never tried, and I know of nobody who has already done this with GrADS. It requires some knowledge of how to convert any lat/lon value into real-valued i,j coordinates in the curvilinear grid. It has always been easier to do this interpolation outside of GrADS. <div>--Jennifer</div><div><br><div><br><div><div>On Mar 18, 2011, at 2:00 PM, James T. Potemra wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>As far as I know, GrADS will only be able to handle curvilinear grids <br>that are curvilinear in one dimension, i.e., lat(i)/lon(i), not <br>lat(i,j)/lon(i,j). Of course you can always make the control file <br>whatever you want, but the display will not be correct.<br><br>Jim<br><br>Edward wrote:<br><blockquote type="cite"><br></blockquote><blockquote type="cite">hi, gradsuser,<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Does anybody has an idea to deal with the curvilinear data in grads? <br></blockquote><blockquote type="cite">Do I need list all long/lat in ctl file? or interpolate outside grads <br></blockquote><blockquote type="cite">before grads?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Thanks for any help.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Dawn<br></blockquote><blockquote type="cite">------------------------------------------------------------------------<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">gradsusr mailing list<br></blockquote><blockquote type="cite"><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br></blockquote><blockquote type="cite"><a href="http://gradsusr.org/mailman/listinfo/gradsusr">http://gradsusr.org/mailman/listinfo/gradsusr</a><br></blockquote><blockquote type="cite"><br></blockquote>_______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>http://gradsusr.org/mailman/listinfo/gradsusr<br></div></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>