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No version of GrADS handles HDF-formatted swath data. You can try to convert it from HDF into the GrADS station-data binary format, but this would require a considerable amount of customized programming. <div>Jennifer<br><div><br></div><div><span class="Apple-style-span" style="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></span><div><div><br><div><div>On Jul 19, 2008, at 9:18 PM, Mr Aaron Pratt wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Hello,</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I am trying to create plots derived from the TRMM 2A12 orbital product (it's the hydrometeor profile data) . It's not gridded data, but rather in orbital swaths. The files are HDF files, so that's why I thought that GrADS might be able to open them. However, I wasn't sure if the HDF files needed to be converted into a GrADS type file (like a .ctl file and the corresponding .dat file). I was told that the files could be converted through the following link:<span class="Apple-converted-space"> </span><a href="http://disc2.nascom.nasa.gov/data/TRMM/">http://disc2.nascom.nasa.gov/data/TRMM/</a>; however I don't see anywhere on the website where this is possible. Thanks in advance for any help that can be provided.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Aaron</div></div></span></blockquote></div><br></div></div></div></div></body></html>