[gradsusr] Cannot Contour Grid - all undefined values error

[Jennifer M Adams]

There is no need to apologize for being a novice. You may find this doc page on how GrADS deals with GRIB data useful:
http://cola.gmu.edu/grads/gadoc/grib.html
Please see more comments inline.


> On Jun 6, 2017, at 11:34 AM, William Rasch - NOAA Federal <william.rasch at noaa.gov> wrote:
> I grabbed one of the files, only one, then cat'ed that to the efi.master

I would haved run g2ctl on just the one file, before cat’ing it to efi.master.

> 
> Ran:  g2ctl  efi.master.ctl
> 
> Then, did a gribmap -v efi.master.ctl
> 
> It then prompted me the "descriptor file", and I entered:  efi.master.ctl
> 
> The feedback from that was this:

In general, it would be better to send the actual text instead of an image of it. 

> 
> <image.png>
It doesn’t look you got a MATCH for any of the records in your file. 
What is in your descriptor file? 

—Jennifer

> 
> I then tried to display tmp2m and got the same error.
> 
> Thanks for any additional help and again, sorry for my incompetence with this.
> 
> Bill
> 
> On Mon, Jun 5, 2017 at 6:20 PM, Jennifer M Adams <jadams21 at gmu.edu> wrote:
> Hi, Bill -
> I find that the g2ctl output often needs a few tweaks to get evertyhing right and some variables need a fourth grib code in the units field in order to match properly. You also appear to be concatenating files with different time stamps and this may be confusing the issue. Try setting up your descriptor with only one file, and run gribmap in verbose mode (with the -v) and look at what is matching/not matching. If records don’t match what’s in your descriptor, gribmap will show you what the entry should contain. Once you are matching all the records in one file, then add the templating for multiple time steps. If it’s still not working please send your descriptor and the gribmap verbose output.
> —Jennifer
> 
> 
> 
> On Jun 5, 2017, at 11:33 AM, William Rasch - NOAA Federal <william.rasch at noaa.gov> wrote:
> 
> > Hi,
> >
> > I have what would seem to be a very simple data-set and "variable" I'm trying to plot wiht GrADS.
> >
> > The grib files are located here...
> >
> > ftp://ftp.cdc.noaa.gov/Public/gbates/reforecast2/efi_grib2/pctile.2017060500.000_to_024hrs.grib2
> >
> > I am simply downloading several of these files, then do this:
> >
> > cat * > efi.master
> > g2ctl efi.master > efi.master.ctl
> > gribmap -i efi.master.ctl
> >
> > I'm simply trying to plot either:
> >
> > temp2m
> > wind10m
> > apcpsfc
> >
> > When I try to display the data, I get the error:
> >
> > Cannot Contour Grid - all undefined values
> >
> > Thanks for any help....
> >
> > Bill
> > _______________________________________________
> > gradsusr mailing list
> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/listinfo/gradsusr
> 
> --
> Jennifer Miletta Adams
> Center for Ocean-Land-Atmosphere Studies (COLA)
> George Mason University
> 
> 
> 
> 
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> 
> 
> 
> -- 
> 
> William Rasch
> Science and Operations Officer
> Weather Forecast Office
> Sacramento, CA
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--
Jennifer Miletta Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
George Mason University