[gradsusr] Opening and extracting grads file generated from fortran

Tue Jul 31 21:15:01 EDT 2012

Dear Jeff,

Thank you very much for this useful information. I will go through the
suggested page for templates and check again the data.

Best regards,
Irene

On Wed, Aug 1, 2012 at 1:38 AM, Jeff Duda <jeffduda319 at gmail.com> wrote:

> It is possible to create control files for each data file, but I don't see
> why you would ever want to do that.  It would be much easier and take much
> less time to change the DSET entry in your one control file instead.  For
> the templating, you only have to match up the pattern of the data file
> name.  See this page about templates<http://www.iges.org/grads/gadoc/templates.html>for more information.  THe warning is just a warning.  The only reason it
> appears is because you have the keyword "options template" in your control
> file, yet you have no template symbols in the DSET entry of your control
> file.  Change your DSET line to this: DSET %y4/mld%y4%m2%d2.gpv to be able
> to use the one control file to open all data files.  Again, make sure you
> run this from the directory that contains those directories or else you
> will get errors from the control file being unable to find the data.
>
> The message you will get when Grads successfully displays data is
> something like what you said: Contouring: 50 to 450 interval 50
> Possible reasons for why you couldn't see it:
> 1) Did you open a display window?
> 2) Is your data defined over a different geographical region than the one
> specified in the control file?  If the dimension environment completely
> misses the region over which the data are defined, you won't see anything
> even though Grads will display it.
>
> You said someone else made these files.  I suggest talking to them about
> how they made them to determine how to display the data if you continue to
> have problems.
>
> Jeff
>
>
> On Mon, Jul 30, 2012 at 11:40 PM, irene alabia <irenealabia at gmail.com>wrote:
>
>> Hi, Thank you for walking me through the process. the folder 1981 exists,
>> but the files were renamed to mld19810101.gpv by an external script. I
>> tried to change the data file to mld19810101.gpv in an attempt to open the
>> first file and it gives me a warning message:
>>
>>
>> ga-> open mld.ctl
>> Scanning description file:  mld.ctl
>> Warning: OPTIONS keyword "template" is used, but the
>>    DSET entry contains no substitution templates.
>> Data file mld19810101.gpv is open as file 1
>>
>> LON set to 99.5 285
>> LAT set to -15.5 65
>> LEV set to 0.5 0.5
>> Time values set: 1981:1:1:0 1981:1:1:0
>> E set to 1 1
>>
>> Is it possible to create .ctl file corresponding to each datafile? I also
>> tried to do "d mld" and gives me a message
>> Contouring: 50 to 450 interval 50. However, data were not displayed.
>> Thanks much.
>>
>>
>>
>>
>> On Tue, Jul 31, 2012 at 1:09 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:
>>
>>> Your control file has time templated.  The time index defaults to 1 when
>>> you first open the control file.  So check if the file
>>> 1981/mld.19810101_0000 exists.  I guessed the name of this file based off
>>> of the DSET entry in the control file (which tells Grads where to look for
>>> the data files) and the TDEF entry.  Since the path I just mentioned seems
>>> relative, make sure you run Grads from the directory that contains these
>>> files.  Otherwise the control file will not find the data and you'll get
>>> that error.  So check on that first.
>>>
>>> Jeff
>>>
>>>
>>> On Mon, Jul 30, 2012 at 11:03 PM, irene alabia <irenealabia at gmail.com>wrote:
>>>
>>>> When  i run the open mld.ctl, I get the following lines:
>>>>
>>>>
>>>> ga-> open mld.ctl
>>>> Scanning description file:  mld.ctl
>>>> Data file %y4/mld.%y4%m2%d2_%h2%n2 is open as file 1
>>>> LON set to 99.5 285
>>>> LAT set to -15.5 65
>>>> LEV set to 0.5 0.5
>>>> Time values set: 1981:1:1:0 1981:1:1:0
>>>> E set to 1 1
>>>>
>>>> and running the d mld gives an error msg.
>>>> ga-> d mld
>>>> Cannot contour grid - all undefined values
>>>>
>>>> Irene
>>>>
>>>>
>>>> On Tue, Jul 31, 2012 at 12:46 PM, Jeff Duda <jeffduda319 at gmail.com>wrote:
>>>>
>>>>> What happens when you run the commands
>>>>> 'open mld.ctl'
>>>>> 'd mld'
>>>>> Any error messages?  Do the data display?
>>>>>
>>>>> Jeff
>>>>>
>>>>>
>>>>> On Mon, Jul 30, 2012 at 10:36 PM, irene alabia <irenealabia at gmail.com>wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> Thank you for the quick reply. Attached is the entire control file.
>>>>>>
>>>>>> Thanks much
>>>>>>
>>>>>>
>>>>>> On Tue, Jul 31, 2012 at 12:13 PM, Jeff Duda <jeffduda319 at gmail.com>wrote:
>>>>>>
>>>>>>> Please show the entire control file.
>>>>>>>
>>>>>>> Jeff Duda
>>>>>>>
>>>>>>> On Mon, Jul 30, 2012 at 10:04 PM, irene alabia <
>>>>>>> irenealabia at gmail.com> wrote:
>>>>>>>
>>>>>>>> Dear Grads-users,
>>>>>>>>
>>>>>>>> I am working with data files which I believed are created using
>>>>>>>> Fortran code. I am new to Grads and I tried the basic commands  to explore
>>>>>>>> the data files but cant get past the opening phase. the file has a control
>>>>>>>> file which looks like this:
>>>>>>>>
>>>>>>>> ga-> open mld.ctl
>>>>>>>> Scanning description file:  mld.ctl
>>>>>>>> Data file %y4/mld.%y4%m2%d2_%h2%n2 is open as file 1
>>>>>>>> LON set to 99.5 285
>>>>>>>> LAT set to -15.5 65
>>>>>>>> LEV set to 0.5 0.5
>>>>>>>> Time values set: 1981:1:1:0 1981:1:1:0
>>>>>>>> E set to 1 1
>>>>>>>>
>>>>>>>> ga-> q file
>>>>>>>> File 1 : Mixed layer depth (delta_sigma = 0.05)
>>>>>>>>   Descriptor: mld.ctl
>>>>>>>>   Binary: %y4/mld.%y4%m2%d2_%h2%n2
>>>>>>>>   Type = Gridded
>>>>>>>>   Xsize = 372  Ysize = 162  Zsize = 54  Tsize = 1080  Esize = 1
>>>>>>>>   Number of Variables = 2
>>>>>>>>      mld  1  99  Mixed layer depth (unit in m ; d_sigma=0.05)
>>>>>>>>      rsig  1  99  Surface density
>>>>>>>>
>>>>>>>>  Any help to read and save the files for each Zlevels is very much
>>>>>>>> appreciated. Thanks in advance.
>>>>>>>>
>>>>>>>> Best regards,
>>>>>>>> Irene
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> gradsusr mailing list
>>>>>>>> gradsusr at gradsusr.org
>>>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Jeff Duda
>>>>>>> Graduate research assistant
>>>>>>> University of Oklahoma School of Meteorology
>>>>>>> Center for Analysis and Prediction of Storms
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> gradsusr mailing list
>>>>>>> gradsusr at gradsusr.org
>>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
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>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Jeff Duda
>>>>> Graduate research assistant
>>>>> University of Oklahoma School of Meteorology
>>>>> Center for Analysis and Prediction of Storms
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> gradsusr mailing list
>>>>> gradsusr at gradsusr.org
>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>
>>>>>
>>>>
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>>>>
>>>
>>>
>>> --
>>> Jeff Duda
>>> Graduate research assistant
>>> University of Oklahoma School of Meteorology
>>> Center for Analysis and Prediction of Storms
>>>
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
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>>
>
>
> --
> Jeff Duda
> Graduate research assistant
> University of Oklahoma School of Meteorology
> Center for Analysis and Prediction of Storms
>
>
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> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>
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