<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div>Respected Jennifer,<br></div><div>Hi, Good morning!<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Thanks for your help. I changed the 'dtype' to 'hdf5_grid'. When I opened it i am getting errors while displaying 'val', the parameter; it says not in HDF5 file!<br data-mce-bogus="1"></div><div>Please suggest..<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>ga-> d val <br>HDF5-DIAG: Error detected in HDF5 (1.8.4-patch1) thread 0: <br> #000: H5D.c line 321 in H5Dopen2(): not found <br> major: Dataset <br> minor: Object not found<br> #001: H5Gloc.c line 468 in H5G_loc_find(): can't find object<br> major: Symbol table<br> minor: Object not found<br> #002: H5Gtraverse.c line 877 in H5G_traverse(): internal path traversal failed<br> major: Symbol table<br> minor: Object not found<br> #003: H5Gtraverse.c line 776 in H5G_traverse_real(): component not found<br> major: Symbol table<br> minor: Object not found<br>Error: H5Dopen2 failed for variable /IWC/ PressureGrid/value<br>Error: Variable /IWC/ PressureGrid/value not in HDF5 file<br>Data Request Error: Error for variable 'val'<br> Error ocurred at column 1<br>DISPLAY error: Invalid expression<br> Expression = val<br>ga-></div><div><br>ga-> q file <br>File 1 : MLS IWC <br> Descriptor: mls.ctl <br> Binary: MLS-Aura_L3DB-IWC_v04-24-c01_2022d365.nc <br> Type = Gridded <br> Xsize = 72 Ysize = 45 Zsize = 29 Tsize = 1 Esize = 1 <br> Number of Variables = 1 <br> val 29 t,z,x,y IWC (mg/m3)<br></div><div><br data-mce-bogus="1"></div><div>The ctl file:</div><div><br data-mce-bogus="1"></div><div>dset MLS-Aura_L3DB-IWC_v04-24-c01_2022d365.nc<br>title MLS IWC<br>dtype hdf5_grid<br>undef -999.99<br>xdef 72 linear -177.5 5.0<br>ydef 45 linear -88.0 4.0<br>zdef 29 levels 1000, 825.4042, 681.2921, 562.3413, 464.1589, 383.1187, 316.2278, 261.0157, 215.4435, 177.8279, 146.7799, 121.1528, 100, 82.54042, 68.1292, 56.23413, 46.41589, 38.31187, 31.62278, 26.10157, 21.54435, 17.78279, 14.67799, 12.11528, 10, 1, 0.1, 0.01, 0.001<br>tdef 1 linear 31DEC2022 1dy<br>vars 1<br>/IWC/PressureGrid/value=>val 29 t,z,x,y IWC (mg/m3)<br>endvars<br><br data-mce-bogus="1"></div><div>With Regards and Thanks,<br data-mce-bogus="1"></div><div>Mahakur<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Adams, Jennifer M. (GSFC-619.0)[ADNET SYSTEMS INC]" <jennifer.m.adams@nasa.gov><br><b>To: </b>"GrADS Users Forum" <gradsusr@gradsusr.org><br><b>Sent: </b>Tuesday, November 21, 2023 1:22:58 AM<br><b>Subject: </b>[Possibly Spoofed] Re: [gradsusr] [EXTERNAL] [BULK] netcdf group variable<br></div><div><br><style><!--
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<p class="MsoNormal"><span style="font-size:11pt">It should work if you change:<br>
dtype netcdf </span></p>
<p class="MsoNormal"><span style="font-size:11pt">to </span></p>
<p class="MsoNormal"><span style="font-size:11pt">dtype hdf5_grid</span></p>
<p class="MsoNormal"><span style="font-size:11pt"><br>
The HDF5 interface does support groups, and netcdf4 is really an hdf5 file under the hood.<br>
--Jennifer <br>
<br>
</span></p>
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<p class="MsoNormal"><span style="font-size:9pt;color:#212121">-- </span><span style="font-size:9pt;color:black"><br>
<b>Jennifer Miletta Adams</b><br>
Senior Scientific Software Developer<br>
Goddard Earth Sciences Data and Information Services Center (GES DISC)</span><span style="font-size:12pt;color:#212121"></span></p>
<p class="MsoNormal"><span style="font-size:9pt;color:black">NASA/GSFC, Code 619</span><span style="font-size:12pt;color:#212121"></span></p>
<p class="MsoNormal"><span style="font-size:9pt;color:#404040">Building 32, Room S159</span><span style="font-size:12pt;color:#404040"></span></p>
<p class="MsoNormal"><span style="font-size:11pt;color:#212121"> </span><span style="font-size:12pt;color:#212121"></span></p>
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<p class="MsoNormal" style="margin-bottom:12pt"><b><span style="font-size:12pt;color:black">From:
</span></b><span style="font-size:12pt;color:black">gradsusr <gradsusr-bounces@gradsusr.org> on behalf of M.Mahakur <mmahakur@tropmet.res.in><br>
<b>Date: </b>Monday, November 20, 2023 at 2:43 PM<br>
<b>To: </b>GrADS Users Forum <gradsusr@gradsusr.org><br>
<b>Subject: </b>[EXTERNAL] [BULK] [gradsusr] netcdf group variable</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">Dear All,</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">I like to display the variable "value" from the attached small netcdf file. I feel the pressure level variable is in the group 'IWC/PressureGrid'. For this I created
the ctl :</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">dset MLS-Aura_L3DB-IWC_v04-24-c01_2022d365.nc<br>
title MLS IWC<br>
dtype netcdf<br>
undef -999.99<br>
xdef 72 linear -177.5 5.0<br>
ydef 45 linear -88.0 4.0<br>
zdef 29 levels 1000, 825.4042, 681.2921, 562.3413, 464.1589, 383.1187, 316.2278, 261.0157, 215.4435, 177.8279, 146.7799, 121.1528, 100, 82.54042, 68.1292, 56.23413, 46.41589, 38.31187, 31.62278, 26.10157, 21.54435, 17.78279, 14.67799, 12.11528, 10, 1, 0.1,
0.01, 0.001<br>
tdef 1 linear 1DEC2022 1dy<br>
vars 1<br>
/IWC/PressureGrid/value=>val 29 t,z,x,y IWC (mg/m3)<br>
endvars<br>
<br>
</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">But, it does not works. It seems it does not matches with the variable!</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:#993366">ga-> d val
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"><br>
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:#993366">Error: Variable /IWC/PressureGrid/value not in netcdf file
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"><br>
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:#993366">Data Request Error: Error for variable 'val'
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"><br>
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:#993366"> Error ocurred at column 1
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"><br>
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:#993366">DISPLAY error: Invalid expression
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"><br>
</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:#993366"> Expression = val</span><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"></span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">i am using Grads 2.0.a9. A portion from the ncdump is:</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">=========================</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">group: IWC\ PressureGrid {<!-- --><br>
dimensions:<br>
lat = 45 ;<br>
lon = 72 ;<br>
lev = 29 ;<br>
time = 1 ;<br>
nv = 2 ;<br>
variables:</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">....</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">...</span></p>
</div>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">float value(time, lev, lon, lat) ;<br>
string value:long_name = "Average Value of Cloud Ice" ;<br>
string value:units = "mg/m!U3!N" ;<br>
value:_FillValue = -999.99f ;<br>
string value:comments = "The average value in a bin" ;<br>
============================<br>
<br>
</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">Please suggest, where to modify in the ctl.</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">Thanks and Regards,</span></p>
</div>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black">Mahakur</span></p>
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<p class="MsoNormal"><span style="font-size:12pt;font-family:'arial' , sans-serif;color:black"> </span></p>
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<br>_______________________________________________<br>gradsusr mailing list<br>gradsusr@gradsusr.org<br>http://gradsusr.org/mailman/listinfo/gradsusr<br></div><div><br></div><div data-marker="__SIG_POST__">-- <br></div><div><div><strong style="font-family:'arial'"><strong style="font-family:'arial'"><span style="font-family:'comic sans ms';font-size:small">M. Mahakur<br>Scientist<br>Radar and Satellite Meteorology Project (PDTC)</span></strong></strong></div><div><strong style="font-family:'arial'"><strong style="font-family:'arial'"><span style="font-family:'comic sans ms';font-size:small">Room No. S127, Main Bldg<br>INDIAN INSTITUTE OF TROPICAL METEOROLOGY<br>(Ministry of Earth Sciences, Govt. of India)<br>Dr. Homi Bhabha Road, NCL Post, Pashan<br>PUNE - 411 008 (INDIA) <br></span></strong></strong></div><div><br></div><div><strong style="font-family:'arial'"><span style="font-family:'comic sans ms';font-size:small">Mob: +91-8806861895<br>Tel: (O) +91-20-259 04 225<br>FAX: +91-20-25865142</span></strong><span style="font-size:9pt;font-family:'arial' , 'sans-serif'"></span><br><strong style="font-family:'arial'"><span style="font-family:'comic sans ms';font-size:small"><br></span></strong><strong style="font-family:'arial'"><strong style="font-family:'arial'"><span style="font-family:'comic sans ms';font-size:small">E-mail: mmahakur@tropmet.res.in<br> mahakur.iitm@gmail.com<br></span></strong></strong></div><div><br></div></div></div></body></html>