[gradsusr] Control File (Template) Entire Grid Undefined

[Jeff Duda]

Things to consider:
-Since you are using the "^", are you sure the data file is in the same
directory as the directory you're running Grads in?
-Use ncdump -v TG or ncview to verify that the array isn't full of undef
values (which you have set as -1.0E+33 in your control file)
-Is the dimension order in your vars entry correct? What does the full
ncdump -h look like?
-Try setting the valid level of TG to 0 instead of 1

Jeff Duda

On Wed, Feb 22, 2017 at 4:29 PM, Melissa Wagner <mawagner at asu.edu> wrote:

> Hello Grad Users,
>
> I am still having the same issue of the control file not reading the data
> correctly. I still get the "entire grid undefined". I have removed the
> byteswpped as well as tried other options like big_indian. This does not
> work.
>
> I did an ncdump -h filename and get the following:
>
> // global attributes:
>                 :TITLE = "OUTPUT FROM HRLDAS v20140513" ;
>                 :missing_value = -1.e+33f ;
>                 :START_DATE = "2008-06-01_00:00:00" ;
>                 :MAP_PROJ = 1 ;
>                 :LAT1 = 17.81886f ;
>                 :LON1 = -127.3326f ;
>                 :DX = 20000.f ;
>                 :DY = 20000.f ;
>                 :TRUELAT1 = 39.f ;
>                 :TRUELAT2 = 39.f ;
>                 :STAND_LON = -98.f ;
>                 :MMINLU = "MODIFIED_IGBP_MODIS_NOAH" ;
>
>
> I have changed my control file to this:
>
> dset ^%y4%m2%d2%h2.LDSAOUT_DOMAIN1
> options TEMPLATE
> dtype netcdf
> undef -1.e33
> title  OUTPUT FROM HRLDAS v20140513
> pdef  310 189 lcc  17.81886 -127.3326  0   0  39.00000  39.00000
>  -98.00000  20000.000  20000.000
> xdef  980 linear -127.3326   0.09009010
> ydef  440 linear  17.81886   0.09009010
> zdef    1 linear 1 1
> tdef 24 linear 00Z01JUN2008     60MN
> VARS 1
> TG=>tg  1 t,y,x Ground Temperature [K]
> ENDVARS
>
> But it still does not read the data. Could someone please help me
> troubleshoot this issue.
>
> Best,
> Melissa
>
>
> On 21 February 2017 at 13:24, James T. Potemra <jimp at hawaii.edu> wrote:
>
>> Melissa,
>>
>> I don't think it makes sense to have "options byteswapped" with a netcdf
>> file.  Second, since you don't define xdef, ydef, zdef, tdef, I think these
>> will need to be defined as longitude,latitude,depth,time in your file (the
>> complete output from ncdump -h might help).
>>
>> Jim
>>
>> On 2/20/17 5:50 PM, Melissa Wagner wrote:
>>
>> Hello Grads Users,
>>
>> I am writing because my control file (template) will not display the
>> Noah-MP offline data. Grads v2.0.a8 opens the control file  but reads
>> "Entire Grid Undefined" when I try to display the variable. I would greatly
>> appreciate any help you may have to offer.
>>
>> Best,
>> Melissa
>>
>> My control file is:
>>
>> dset ^%y4%m2%d2%h2.LDSAOUT_DOMAIN1
>> options  byteswapped
>> options TEMPLATE
>> dtype netcdf
>> undef -1.e33
>> title  OUTPUT FROM HRLDAS v20140513
>> pdef  309 189 lcc  17.1886 -127.3326  1   1  39.00000  39.00000
>>  -98.00000  20000.000  20000.000
>> xdef  310 linear -127.3326   0.18983819
>> ydef  190 linear  17.81886   0.18983819
>> zdef    4 linear 1 1
>> tdef 24 linear 00Z01JUN2008     60MN
>> VARS 1
>> TG=>tg  1 t,y,x Ground Temperature [K]
>> ENDVARS
>>
>> ncdump -h yields the following global attribute info.
>>
>>  :TITLE = "OUTPUT FROM HRLDAS v20140513" ;
>>                 :missing_value = -1.e+33f ;
>>                 :START_DATE = "2008-06-01_00:00:00" ;
>>                 :MAP_PROJ = 1 ;
>>                 :LAT1 = 17.81886f ;
>>                 :LON1 = -127.3326f ;
>>                 :DX = 20000.f ;
>>                 :DY = 20000.f ;
>>                 :TRUELAT1 = 39.f ;
>>                 :TRUELAT2 = 39.f ;
>>                 :STAND_LON = -98.f ;
>>                 :MMINLU = "MODIFIED_IGBP_MODIS_NOAH" ;
>>
>>
>>
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>>
>>
>>
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>
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-- 
Jeff Duda
Post-doctoral research fellow
University of Oklahoma School of Meteorology
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