[gradsusr] Cannot Contour Grid - all undefined values error

Wed Jun 7 12:01:27 EDT 2017

Jennifer/Wesley,

The level of support you both are providing is crazy great, so thanks.
Ugh!  But I'm still having issues!  Really strange.

So here is my latest,

I do the g2ctl on the grib2 file that I downloaded.  I then did a cat
command on that control file...below...there are some lines different, not
sure they are significant?  In the control file there is ENDVARS, Jennifer,
yours has ENDEDEF for one.

> g2ctl pctile.2017060700.000_to_024hrs.grib2 >
pctile.2017060700.000_to_024hrs.grib2.ctl
> cat pctile.2017060700.000_to_024hrs.grib2.ctl
dset ^pctile.2017060700.000_to_024hrs.grib2
index ^pctile.2017060700.000_to_024hrs.grib2.idx
undef 9.999E+20
title pctile.2017060700.000_to_024hrs.grib2
* produced by g2ctl v0.1.1
* command line options: pctile.2017060700.000_to_024hrs.grib2
* griddef=1:0:(131 x 66):grid_template=0:winds(N/S): lat-lon grid:(131 x
66) units 1e-06 input WE:SN output WE:SN res 48 lat 10.000000 to 75.000000
by 1.000000 lon 180.000000 to 310.000000 by 1.000000 #points=8646:winds(N/S)

dtype grib2
ydef 66 linear 10.000000 1
xdef 131 linear 180.000000 1.000000
tdef 1 linear 00Z08jun2017 1mo
zdef 1 linear 1 1
vars 3
APCPsfc   0,1,0   0,1,8,4 ** surface Total Precipitation [kg/m^2]
TMP2m   0,103,2   0,0,0,0 ** 2 m above ground Temperature [K]
WIND10m   0,103,10   0,2,1,0 ** 10 m above ground Wind Speed [m/s]
ENDVARS

So now I do the index command and don't get any matches...

> gribmap -v -i pctile.2017060700.000_to_024hrs.grib2.ctl
gribmap: scanning GRIB2 file: pctile.2017060700.000_to_024hrs.grib2
1.1: lev1=1,0 var=0,1,8,4 ens=197
2.1: lev1=103,2 var=0,0,0,0 ens=197
3.1: lev1=103,10 var=0,2,1,0 ens=197
gribmap: Writing out the GRIB2 index file (version 3)

When I then do a:
> grads -l
> open pctile.2017060700.000_to_024hrs.grib2.ctl
> d tmp2m

I get the UNDEFINED ERROR!!!

Ugh!

Thanks so much if you have ANY other ideas!

Bill

On Tue, Jun 6, 2017 at 2:03 PM, Jennifer M Adams <jadams21 at gmu.edu> wrote:

>
> On Jun 6, 2017, at 4:07 PM, William Rasch - NOAA Federal <
> william.rasch at noaa.gov> wrote:
>
> Hi Jennifer,
>
> I don't know what my descriptor file is.
>
>
> It is the output from g2ctl. It is a text file that organizes metadata in
> a format that GrADS (and humans) can easily understand. I copied it into a
> file (I named it pctile.2017060500 <(201)%20706-0500>.000_to_024hrs.grib2.ctl)
> like this:
>
> > g2ctl pctile.2017060500 <(201)%20706-0500>.000_to_024hrs.grib2 > pctile.
> 2017060500 <(201)%20706-0500>.000_to_024hrs.grib2.ctl
>
> And here is what is in it:
>
> dset ^pctile.2017060500 <(201)%20706-0500>.000_to_024hrs.grib2
> index ^pctile.2017060500 <(201)%20706-0500>.000_to_024hrs.grib2.idx
> undef 9.999E+20
> title pctile.2017060500 <(201)%20706-0500>.000_to_024hrs.grib2
> * produced by g2ctl v0.1.1
> * command line options: pctile.2017060500 <(201)%20706-0500>.000_to_
> 024hrs.grib2
> * griddef=1:0:(131 x 66):grid_template=0:winds(N/S): lat-lon grid:(131 x
> 66) units 1e-06 input WE:SN output WE:SN res 48 lat 10.000000 to 75.000000
> by 1.000000 lon 180.000000 to 310.000000 by 1.000000 #points=8646:winds(N/S)
> dtype grib2
> ydef 66 linear 10.000000 1
> xdef 131 linear 180.000000 1.000000
> tdef 1 linear 00Z06jun2017 1mo
> zdef 1 linear 1 1
> vars 3
> APCPsfc   0,1,0   0,1,8,4 ** surface Total Precipitation [kg/m^2]
> TMP2m   0,103,2   0,0,0,0 ** 2 m above ground Temperature [K]
> WIND10m   0,103,10   0,2,1,0 ** 10 m above ground Wind Speed [m/s]
> ENDVARS
> EDEF 1
> E197 1  00Z06jun2017 197
> ENDEDEF
>
>
> Then I ran gribmap on it, like this:
>
> >  gribmap -v -i pctile.2017060500 <(201)%20706-0500>.000_to_
> 024hrs.grib2.ctl
> gribmap: scanning GRIB2 file: pctile.2017060500 <(201)%20706-0500>.000_to_
> 024hrs.grib2
> 1.1: lev1=1,0 var=0,1,8,4 ens=197 valid at 2017-06-06-00:00 (t=1)  MATCH
> 2.1: lev1=103,2 var=0,0,0,0 ens=197 valid at 2017-06-06-00:00 (t=1)  MATCH
> 3.1: lev1=103,10 var=0,2,1,0 ens=197 valid at 2017-06-06-00:00 (t=1)
>  MATCH
> gribmap: Writing out the GRIB2 index file (version 3)
>
>
> I could open this file with GrADS and display tmp2m:
>
>
>
>
>
> Bill
>
>
> On Tue, Jun 6, 2017 at 8:50 AM, Jennifer M Adams <jadams21 at gmu.edu> wrote:
> 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
> >
> >
> >
> >
> > _______________________________________________
> > gradsusr mailing list
> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/listinfo/gradsusr
> >
> >
> >
> > --
> >
> > William Rasch
> > Science and Operations Officer
> > Weather Forecast Office
> > Sacramento, CA
> > _______________________________________________
> > 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
>
>
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>
>
> --
>
> William Rasch
> Science and Operations Officer
> Weather Forecast Office
> Sacramento, CA
> _______________________________________________
> 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
>
>
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>

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William Rasch
Science and Operations Officer
Weather Forecast Office
Sacramento, CA
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