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<p class="MsoNormal">Grib data do not need aliases in the variable declaration, you can name variables anything you want – the grib codes in the levels and units fields are what matter.
<o:p></o:p></p>
<p class="MsoNormal">Instead of <o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">gp2e+09pv=>hgtpv2000 0 0,3,4 ** PV=2000 (Km^2/kg/s) surface Geopotential [m^2/s^2]<br>
use <o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">hgtpv2000 0 0,3,4 ** PV=2000 (Km^2/kg/s) surface Geopotential [m^2/s^2]<o:p></o:p></p>
<p class="MsoNormal">or<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">zspv2000 0 0,3,4 ** PV=2000 (Km^2/kg/s) surface Geopotential [m^2/s^2]<br>
or<o:p></o:p></p>
<p class="MsoNormal" style="text-indent:.5in">foo 0 0,3,4 ** PV=2000 (Km^2/kg/s) surface Geopotential [m^2/s^2]<br>
<br>
<o:p></o:p></p>
<p class="MsoNormal">As long as your name is lower case alphanumeric and is less than 16 characters you can call it whatever you want to.<o:p></o:p></p>
<p class="MsoNormal">--Jennifer<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-indent:.5in"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">-- <span style="color:black"><br>
Jennifer Miletta Adams<br>
ADNET Systems, Inc.<br>
NASA/GSFC, Code 610.2</span><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:black">Building 32, Room S159<br>
(301) 614-6070<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">gradsusr <gradsusr-bounces@gradsusr.org> on behalf of Jeff Duda <jeffduda319@gmail.com><br>
<b>Reply-To: </b>GrADS Users Forum <gradsusr@gradsusr.org><br>
<b>Date: </b>Saturday, July 6, 2019 at 7:07 PM<br>
<b>To: </b>GrADS Users Forum <gradsusr@gradsusr.org><br>
<b>Subject: </b>[EXTERNAL] Re: [gradsusr] Not standard variable name<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">You can rename variables in the control file to simpler ones that conform to naming syntax conventions. Just use the format
<o:p></o:p></p>
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<p class="MsoNormal">(grib_name)=>(new_name)<o:p></o:p></p>
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<p class="MsoNormal">Make sure you put no spaces around the "=>"<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">For example, in your control file, you could do:<o:p></o:p></p>
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<p class="MsoNormal">gp2e+09pv=>hgtpv2000 0 0,3,4 ** PV=2000 (Km^2/kg/s) surface Geopotential [m^2/s^2]<br>
gp1p5e+09pv=>hgtpv1500 0 0,3,4 ** PV=1500 (Km^2/kg/s) surface Geopotential [m^2/s^2] <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Sat, Jul 6, 2019 at 8:10 AM iri <<a href="mailto:iri@irizone.net">iri@irizone.net</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi all !<br>
<br>
I work with the model "AROME" by Météo-France.<br>
I download a grib2 file from<br>
<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__mf-2Dmodels-2Don-2Daws.org_-23arome-2Dfrance_v2_2019-2D07-2D06_06_GP_pv_&d=DwMFaQ&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=M2mFZsxo0ZoztoK2Lyoypu1kKkBVKyEoM9CXGWO42zk&m=PMweNxqkkZEIaLkbguPaXqXH5sUpkaVBZ4a-cn3AuqA&s=VUWr-WLBOWh-EbeRzwaBVqk6rUEbKJNAX5PHAql5W9k&e=" target="_blank">https://mf-models-on-aws.org/#arome-france/v2/2019-07-06/06/GP/pv/</a>
to<br>
get PVU (1.5 and 2).<br>
<br>
$ wgrib2 arome-france_20190706_06_GP_pv_17h.grib2<br>
1:0:d=2019070606:GP:PV=2000 (Km^2/kg/s) surface:17 hour fcst:<br>
2:221788:d=2019070606:GP:PV=1500 (Km^2/kg/s) surface:17 hour fcst:<br>
<br>
$ g2ctl file.grib2 > pvu.ctl<br>
<br>
ga-> open pvu.ctl<br>
<br>
ga-> q file<br>
File 1 : arome-france_20190706_06_GP_pv_17h.grib2<br>
Descriptor: pvu.ctl<br>
Binary: arome-france_20190706_06_GP_pv_17h.grib2<br>
Type = Gridded<br>
Xsize = 801 Ysize = 601 Zsize = 1 Tsize = 1 Esize = 1<br>
Number of Variables = 2<br>
gp2e+09pv 0 0,3,4 ** PV=2000 (Km^2/kg/s) surface Geopotential<br>
[m^2/s^2]<br>
gp1p5e+09pv 0 0,3,4 ** PV=1500 (Km^2/kg/s) surface Geopotential<br>
[m^2/s^2]<br>
<br>
ga-> d gp2e+09pv<br>
Syntax Error: Invalid Operand<br>
'gp2e' not a variable or function name<br>
Error ocurred at column 1<br>
DISPLAY error: Invalid expression<br>
Expression = gp2e+09pv<br>
<br>
I tried with wgrib2 -set_var, it changes only GP to HGT and the final<br>
name in ctl becomes hgt2e+09pv<br>
It is a logical result.<br>
<br>
I tested with alt_g2ctl and -short option. In this case :<br>
<br>
ga-> open pvu2.ctl<br>
Scanning description file: pvu2.ctl<br>
Data file arome-france_20190706_06_GP_pv_17h.grib2 is open as file 1<br>
LON set to -8 12<br>
LAT set to 38 53<br>
LEV set to 1 1<br>
Time values set: 2019:7:6:23 2019:7:6:23<br>
E set to 1 1<br>
<br>
ga-> q file<br>
File 1 : arome-france_20190706_06_GP_pv_17h.grib2<br>
Descriptor: pvu2.ctl<br>
Binary: arome-france_20190706_06_GP_pv_17h.grib2<br>
Type = Gridded<br>
Xsize = 801 Ysize = 601 Zsize = 1 Tsize = 1 Esize = 1<br>
Number of Variables = 2<br>
v1 0 0 "GP:PV=1500 (Km^2/kg/s) surface"<br>
v2 0 0 "GP:PV=2000 (Km^2/kg/s) surface"<br>
<br>
ga-> d v1<br>
Cannot contour grid - all undefined values<br>
<br>
How can i rename gp1p5e+09pv to gp1p5e by example ?<br>
<br>
Thank you for your help in advance.<br>
<br>
Stephane Iri<br>
InC + PE13<br>
Marseille, France<br>
<br>
_______________________________________________<br>
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<p class="MsoNormal"><br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Jeff Duda, Research Scientist</span><o:p></o:p></p>
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<p class="MsoNormal">University of Colorado Boulder<o:p></o:p></p>
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<p class="MsoNormal">Cooperative Institute for Research in Environmental Sciences<o:p></o:p></p>
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<p class="MsoNormal">NOAA/OAR/ESRL/Global Systems Division<br>
<span style="font-size:10.0pt">Boulder, CO</span><o:p></o:p></p>
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