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<p class="owaPara">Thanks Mike ..... This approach worked too, and it seems easier/less quirky than trying to get xdfopen to work.</p>
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<div id="divRplyFwdMsg" dir="ltr"><font color="#000000" face="Calibri, sans-serif" style="font-size: 11pt;"><b>From:</b> gradsusr-bounces@gradsusr.org <gradsusr-bounces@gradsusr.org> on behalf of Mike Bosilovich <mike.bosilovich@gmail.com><br>
<b>Sent:</b> Saturday, August 24, 2013 4:42 PM<br>
<b>To:</b> GrADS Users Forum<br>
<b>Subject:</b> Re: [gradsusr] Issue creating an opendap xdf control file that works for 3-hour MERRA MAI3CPASM.5.2.0</font>
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<div>Hi Ned,<br>
<br>
</div>
As an alternate to xdfopen I would like to offer a suggestion. If you sdfopen one of the HDF files, then run "q ctlinfo" you will see most if not all of what you need to make a ctl file that will open the HDF with the "open" command. You'll need to template
your files. I have found this approach much less frustrating than trying to figure out xdfopen files.<br>
<br>
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<div>Mike<br>
</div>
<br>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Fri, Aug 23, 2013 at 11:16 AM, Vizy, Edward K <span dir="ltr">
<<a href="mailto:ned@jsg.utexas.edu" target="_blank">ned@jsg.utexas.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; padding-left: 1ex; border-left-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid;">
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<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Hi All,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">I’m trying to open the MERRA 3-hourly MAI3CPASM.5.2.0 data using GrADS opendap. I want to open multiple days at once to generate time averages, hence I need to create
and use a control file I create to open all of the hdf files in the MERRA collection that I am interested in using xdfopen.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">I have created the following control file:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">_______________________________________________<u></u><u></u></span></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">dset
<a href="http://goldsmr3.sci.gsfc.nasa.gov/opendap/MERRA/MAI3CPASM.5.2.0/%y4/%m2/MERRA100.prod.assim.inst3_3d_asm_Cp.%y4%m2%d2.hdf" target="_blank">
http://goldsmr3.sci.gsfc.nasa.gov/opendap/MERRA/MAI3CPASM.5.2.0/%y4/%m2/MERRA100.prod.assim.inst3_3d_asm_Cp.%y4%m2%d2.hdf</a><u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">options template<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">TDEF TIME:EOSGRID 248 linear 00Z01JAN1979 3hr<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">_______________________________________________<u></u><u></u></span></b></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">but when I go to execute it in GrADS I get the following error message:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">[MAI3CPASM.5.2.0]$ grads<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Grid Analysis and Display System (GrADS) Version 2.0.2<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Copyright (c) 1988-2011 by Brian Doty and the<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Institute for Global Environment and Society (IGES)<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">GrADS comes with ABSOLUTELY NO WARRANTY<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">See file COPYRIGHT for more information<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Config: v2.0.2 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids,stn geotiff shapefile<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Issue 'q config' command for more detailed configuration information<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Landscape mode? ('n' for portrait): y<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">GX Package Initialization: Size = 11 8.5
<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">ga-> xdfopen test.opendap.ctl<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Scanning Descriptor File: test.opendap.ctl<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">gadsdf: Time dimension TIME:EOSGRID is not an SDF dimension.<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">SDF Descriptor file test.opendap.ctl was not successfully opened & parsed.</span></b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Having this failure I backtracked and downloaded the MERRA data via FTP to my local machine and created a similar xdf control file to access the data on the local system:<u></u><u></u></span></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">______________________________________________________<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">dset ^./%y4/%m2/MERRA100.prod.assim.inst3_3d_asm_Cp.%y4%m2%d2.hdf<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">options template<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">TDEF TIME:EOSGRID 248 linear 00Z01JAN1979 3hr<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">______________________________________________________<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">When I run this in GrADS everything works as it should and I can access all the MERRA data. Am I missing something for opendap that I need to include in the xdf control
file? Alternatively, has anyone been able to successfully create a xdf control file to read the 3-hourly data from MERRA via opendap?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Here is my GrADS build info:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Config: v2.0.2 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids,stn geotiff shapefile<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Grid Analysis and Display System (GrADS) Version 2.0.2<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Copyright (c) 1988-2011 by Brian Doty and the<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Institute for Global Environment and Society (IGES)
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">This program is distributed WITHOUT ANY WARRANTY
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">See file COPYRIGHT for more information.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Built Thu Nov 8 13:55:26 EST 2012 for x86_64-unknown-linux-gnu<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">This version of GrADS has been configured with the following options:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o Built on a LITTLE ENDIAN machine<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o Athena Widget GUI DISABLED<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o Command line editing ENABLED
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://tiswww.case.edu/php/chet/readline/rltop.html" target="_blank">http://tiswww.case.edu/php/chet/readline/rltop.html</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o printim command for image output ENABLED
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://www.zlib.net" target="_blank">http://www.zlib.net</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://www.libpng.org/pub/png/libpng.html" target="_blank">http://www.libpng.org/pub/png/libpng.html</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://www.libgd.org/Main_Page" target="_blank">http://www.libgd.org/Main_Page</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o GRIB2 interface ENABLED
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://www.ijg.org" target="_blank">http://www.ijg.org</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://www.ece.uvic.ca/~mdadams/jasper" target="_blank">http://www.ece.uvic.ca/~mdadams/jasper</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2" target="_blank">http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> g2clib-1.4.0
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o NetCDF interface ENABLED
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://www.unidata.ucar.edu/software/netcdf" target="_blank">http://www.unidata.ucar.edu/software/netcdf</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> netcdf 4.1.2 of Oct 5 2011 11:54:30 $
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o OPeNDAP gridded data interface ENABLED<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o OPeNDAP station data interface ENABLED<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">
<a href="http://iges.org/grads/gadoc/supplibs.html" target="_blank">http://iges.org/grads/gadoc/supplibs.html</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> libgadap 2.0
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o HDF4 and HDF5 interfaces ENABLED
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://hdfgroup.org" target="_blank">http://hdfgroup.org</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> HDF 4.2r3
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> HDF5 1.8.7
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o GeoTIFF and KML/TIFF output ENABLED<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">
<a href="http://www.libtiff.org" target="_blank">http://www.libtiff.org</a> <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> <a href="http://geotiff.osgeo.org" target="_blank">http://geotiff.osgeo.org</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o KML contour output ENABLED<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"> o Shapefile interface ENABLED<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">
<a href="http://shapelib.maptools.org" target="_blank">http://shapelib.maptools.org</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Many thanks,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Ned
<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal" style="padding: 0in; border: currentColor;"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Dr. Edward “Ned” Vizy<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Research Engineer/Scientist Associate V<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Jackson School of Geosciences<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Department of Geological Sciences<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">The University of Texas at Austin<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">1 University Station C1100<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">Austin, Texas 78712<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">e-mail:
<a href="mailto:ned@jsg.utexas.edu" target="_blank">ned@jsg.utexas.edu</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;">phone:
<a href="tel:512-585-1937" target="_blank" value="+15125851937">512-585-1937</a><u></u><u></u></span></p>
<div style="border-width: medium medium 1.5pt; border-style: none none solid; border-color: currentColor currentColor windowtext; padding: 0in 0in 1pt;">
<p class="MsoNormal" style="padding: 0in; border: currentColor;"><span style="font-family: "Times New Roman","serif"; font-size: 12pt;"><u></u> <u></u></span></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
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