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<p class="MsoNormal"><span style="color:#1F497D">Thanks, Jim.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I probably will need more details. But, first I’ll take a stab at a GrADS-like CTL file. I presume xdfopen would be the GrADS command.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Herb
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> gradsusr-bounces@gradsusr.org [mailto:gradsusr-bounces@gradsusr.org]
<b>On Behalf Of </b>James T. Potemra<br>
<b>Sent:</b> Tuesday, September 16, 2014 3:45 PM<br>
<b>To:</b> GrADS Users Forum<br>
<b>Subject:</b> Re: [gradsusr] cannot load CO-OPS Great Lake NetCDF datasets<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Herb,<br>
<br>
You'll need to generate a data descriptor file for this. Note that this model output<br>
is on a rectilinear grid (lat/lon) and sigma-coordinate (vertical), so even with a
<br>
descriptor file you will need to make some approximations. On the plus side you<br>
should be able to use the template option to get time-series if needed.<br>
<br>
Jim<br>
<br>
Let me know if you need more details.<o:p></o:p></p>
<div>
<p class="MsoNormal">On 9/16/14 9:27 AM, Philbrick, Herb wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I would like to access CO-OPS Great Lakes Operational Forecast System, GLOFS, datasets using GrADS.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I have never worked with netcdf files. <o:p></o:p></p>
<p class="MsoNormal">Nor have I worked with a THREDDS server.<o:p></o:p></p>
<p class="MsoNormal">I often access NOMADS through its OpenDAP server using GrADS on my PC. The GrADS command is like<o:p></o:p></p>
<p class="MsoNormal"> <span style="font-size:8.0pt;font-family:"Courier New"">
Sdfopen <a href="http://nomads.ncep.noaa.gov:9090/dods/rap/rap20140915/rap_00z">http://nomads.ncep.noaa.gov:9090/dods/rap/rap20140915/rap_00z</a></span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I have tried the following in GrADS (grads.exe – opendap enabled (see the PS))<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> Sdfopen
<a href="http://opendap.co-ops.nos.noaa.gov/thredds/wms/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t19z.nc">
http://opendap.co-ops.nos.noaa.gov/thredds/wms/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t19z.nc</a></span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">GrADS returns the following message in the GrADS console:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">Scanning self-describing file:
<a href="http://opendap.co-ops.nos.noaa.gov/thredds/dodsC">http://opendap.co-ops.nos.noaa.gov/thredds/dodsC</a></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t20z.nc</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">nc_open failure:</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">No such file or directory</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New""><a href="http://opendap.co-ops.nos.noaa.gov/thredds/dodsC/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t19z.nc">http://opendap.co-ops.nos.noaa.gov/thredds/dodsC/NOAA/LMOFS/MODELS/201409/glofs.lmofs.fields.nowcast.20140915.t19z.nc</a>
does not exist or is not a netCDF file.</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">Couldn't ingest SDF metadata.</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">If this was an HDF-SDS file, try gradshdf.</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I downloaded the nc file to my PC c:\grads19\win32\ sub-directory.
<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">ga-> sdfopen glofs.lmofs.fields.nowcast.20140915.t19z.nc</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">Scanning self-describing file: glofs.lmofs.fields.nowcast.20140915.t19z.nc</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">SDF file has no discernable X coordinate.</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:8.0pt;font-family:"Courier New"">ga-></span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">ncdump on the <u>downloaded</u> file DID obtain sensible information for header, variables values, etc.<o:p></o:p></p>
<p class="MsoNormal">The <u>downloaded</u> file can be loaded into Excel using the NetCDF add-in.<o:p></o:p></p>
<p class="MsoNormal"> Hence, the downloaded file sure seems to be good.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">The folks at CO-OPS do not use GrADS and could not furnish advice.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Can you give me the proper command or settings to use to access LMOFS datasets?<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Thanks in advance,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Herb Philbrick
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">PS
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">I am using Grads19 because, ultimately, I output grib-1 files.
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">ga-> q config</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">Config: v1.9.0-rc1 32-bit little-endian readline sdf/xdf netcdf dap dap-stn lats</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">athena printim</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">Grid Analysis and Display System (GrADS) Version 1.9.0-rc1</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">Copyright (c) 1988-2005 by Brian Doty and IGES</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">Center for Ocean-Land-Atmosphere Studies (COLA)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">Institute for Global Environment and Society (IGES)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">This program is distributed WITHOUT ANY WARRANTY</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">See file COPYRIGHT for more information.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">Built Fri Jan 25 02:30:31 EST 2008 for i686-pc-cygwin</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">This version of GrADS has been configured with the following options:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o This is a 32-bit LITTLE ENDIAN machine version.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o Command line editing (readline) ENABLED.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o CIRES/CDC (<a href="http://www.cdc.noaa.gov">http://www.cdc.noaa.gov</a>) SDF/XDF interface ENABLED.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> Use sdfopen/xdfopen to read NetCDF files.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o DTYPE netcdf is ENABLED; DTYPE hdfsds is DISABLED.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o OPeNDAP (a.k.a. DODS) gridded data interface ENABLED. (<a href="http://opendap.org">http://opendap.org</a>)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> This version is configured to access gridded data on OPeNDAP servers</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> via the sdfopen or xdfopen commands, or using DTYPE netcdf.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o OPeNDAP (a.k.a. DODS) station data interface (gadap) ENABLED.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> This version is configured to access station data on OPeNDAP servers</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> via the open command.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o PCMDI (<a href="http://www-pcmdi.llnl.gov">http://www-pcmdi.llnl.gov</a>) LATS interface ENABLED.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> This version is configured to write GRIB and NetCDF files.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o DAO (<a href="http://dao.gsfc.nasa.gov">http://dao.gsfc.nasa.gov</a>) Athena Widget GUI ENABLED.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o NRL/DAO/PCMDI XA or ImageMagick Image Output DISABLED.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> o printim command for direct png/gif output ENABLED.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> (via the GD Library --
<a href="http://www.boutell.com/gd">http://www.boutell.com/gd</a>)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New"">For additional information please consult
<a href="http://grads.iges.org/grads/">http://grads.iges.org/grads/</a></span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">ga-></span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><br>
<br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>gradsusr mailing list<o:p></o:p></pre>
<pre><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><o:p></o:p></pre>
<pre><a href="http://gradsusr.org/mailman/listinfo/gradsusr">http://gradsusr.org/mailman/listinfo/gradsusr</a><o:p></o:p></pre>
</blockquote>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
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