[gradsusr] How to use template option for .nc file (there is no .ctl, file)
lpasmanoranjan
lpasmanoranjan at gmail.com
Fri Apr 8 00:51:02 EDT 2016
Dear Hoop,
It seems my datasets are not proper. I think the time dimension. Because I
am getting same error messegae. I replaced the sdfopent.gs with new
sdfopent2.gs.
I am getting the following message:
sdfopent2 /home/data/pre/01/pre_1995-01-01_00.nc pre_1995-01-01_%h2.nc 24
00z01jan1995
1hr
Defaulting optional DDF arg to out.ddf
netCDFfile= /home/data/pre/01/pre_1995-01-01_00.nc
Template= pre_1995-01-01_%h2.nc
NumTimes= 24
Time1= 00z01jan1995
Tstep= 1hr
DDF= out.ddf
*gadsdf: Time dimension time is not an SDF dimension.*
SDF Descriptor file out.ddf was not successfully opened & parsed.
Scanning Descriptor File: out.ddf
gadsdf: Time dimension time is not an SDF dimension.
SDF Descriptor file out.ddf was not successfully opened & parsed.
SET Error: No files open yet
SET Error: No files open yet
On 8 April 2016 at 13:27, Hoop <hoop at colorado.edu> wrote:
> Mano,
>
> Here's another alternative. I've written a different version of
> sdfopent.gs, called sdfopent2.gs, for the one time step per file
> case. It takes more arguments:
>
> sdfopent netCDFpath Template NumTimes FirstTime TimeStepSize [DDF]
> Where:
> netCDFpath is full path to netcdf file
> Template is the template (full path or relative)
> NumTimes is the number of timesteps in the netCDF file
> FirstTime is the first time value; E.G., 00z01Jan1979
> TimeStepSize is the size of the time step, E.G., 1hr or 1dy or 1mo
> DDF is optional name of DDF file created.
>
> I've attached this script.
>
> -Hoop
>
>
> On 04/07/16 18:13, lpasmanoranjan wrote:
>
>> Dear Hoop,
>> Thank you very much for providing a possible solution. I will go into it
>> and tell you.
>>
>> I had tried a lot by changing script and writing descriptor file etc..
>> But could not solve that. But I had thought to convert each .nc file to
>> grads form.
>>
>> I will come back here soon.
>>
>> Thanks and kind regards,
>>
>> On Friday 8 April 2016, Hoop <hoop at colorado.edu> wrote:
>>
>> I've not heard back from Mano, but an outside-of-GrADS solution
>> has occurred to me, although I'm unsure of its practicality. One
>> could use the ncrcat command from the NetCDF operators (nco.sf.net)
>> to combine the files into one for GrADS.
>>
>> -Hoop
>>
>> On 04/05/16 00:08, Hoop wrote:
>>
>> Mano,
>>
>> I'm not sure, but I think it might be the one time step in each
>> file
>> thing. If I recall correctly (and it hasn't changed), GrADS kind
>> of
>> depends (at least, in the sdfopen case) on there being at least
>> two
>> time steps in each file. It reads (or read, at least) the first
>> two
>> time steps in a file to learn what time step size is. But,
>> there's
>> hope, even it turns out I'm right about this point.
>>
>> So, the sdfopent.gs script wrote a DDF
>> (out.ddf, apparently). We
>> just need to make sure the TDEF line in that file is correct.
>> Please
>> share that part of out.ddf, and I may need to suggest a
>> modification
>> to it. If that's the case, then you could just re-start GrADS
>> after
>> modifying it, and then entering "xdfopen out.ddf" at the initial
>> GrADS prompt.
>>
>> Thanks,
>> -Hoop
>>
>> On 04/04/16 21:09, lpasmanoranjan wrote:
>>
>> Dear Hoop,
>> Thank you so much for your prompt reply. I did a mistake
>> when I copied
>> to gmail. But the message was same. ncdump gives the
>> following
>>
>> ga-> !ncdump -h /home/data/pre/1995/01/pre_1995_01_01_00.nc
>> netcdf pre_1995_01_01_00.nc {
>> dimensions:
>> LON = 3223 ;
>> LAT = 4943 ;
>> TIME = 1 ;
>> variables:
>> double LON(LON) ;
>> LON:units = "degrees_east" ;
>> LON:long_name = "Longitude" ;
>> double LAT(LAT) ;
>> LAT:units = "degrees_north" ;
>> LAT:long_name = "Latitude" ;
>> double TIME(TIME) ;
>> TIME:units = "seconds since 1970-01-01 00:00:00
>> +0:00" ;
>> TIME:long_name = "Time" ;
>> short PRE(TIME, LAT, LON) ;
>> PRE:long_name = "60-minutes precipitation" ;
>> PRE:units = "1e-3 meter" ;
>> PRE:missing_value = -32768s ;
>> PRE:scale_factor = 0.01f ;
>> PRE:add_offset = 0.f ;
>>
>>
>> On 5 April 2016 at 11:48, Hoop <hoop at colorado.edu> wrote:
>>
>> Mano,
>>
>> I'm confused. Why does the path to your first file
>> have a space inside
>> of it? You have:
>>
>> /home/data/pre/1995/01/ pre_1995_01_01.nc
>>
>> Shouldn't it be:
>>
>> /home/data/pre/1995/01/pre_1995_01_01.nc
>>
>> If that doesn't solve it, please send the output from
>> running
>> "ncdump -ht " on the first file. If you are not
>> familiar with
>> ncdump, it is part of the standard NetCDF suite from
>> Unidata:
>>
>> http://www.unidata.ucar.edu/software/netcdf/
>>
>> Thanks,
>> -Hoop
>>
>>
>> On 04/04/16 20:20, lpasmanoranjan wrote:
>>
>> Dear Hoop,
>> Thank you very much for your reply. I tried it for
>> 2 files after
>> saving
>> sdfopent.gs in my scripts directory. But
>> getting
>> the following error.
>>
>>
>> My data directory: /home/data/pre/1995/01/
>> Number of Times: 2 (pre_1995_01_01.nc and
>> pre_1995_01_02.nc)
>> (Kindly Note: each file has only one time data, so
>> I changed the
>> deltahr
>> = 1 in the sdfopent.gs script
>> at line 150)
>>
>> Now I used the following command and got the
>> subquent messages.
>>
>> ga-> sdfopent /home/data/pre/1995/01/
>> pre_1995_01_01.nc
>> pre_1995_01_%h2.nc 2
>> Defaulting optional DDF arg to out.ddf
>> yr1=1995.
>> netCDFfile= /home/data/pre/1995/01/
>> pre_1995_01_01.nc
>> Template= pre_1995_01_%h2.nc
>> NumTimes= 2
>> Time1= 00Z01JAN1995
>> Tstep= 1hr
>> DDF= out.ddf
>> gadsdf: Time dimension time is not an SDF dimension.
>> SDF Descriptor file out.ddf was not successfully
>> opened & parsed.
>> Scanning Descriptor File: out.ddf
>> gadsdf: Time dimension time is not an SDF dimension.
>> SDF Descriptor file out.ddf was not successfully
>> opened & parsed.
>>
>> SET Error: No files open yet
>> SET Error: No files open yet
>>
>> I must be doing some mistake, can anybody please
>> help me to sort
>> this
>> problem. Thank you so much.
>>
>> On 5 April 2016 at 02:23, Hoop <hoop at colorado.edu>
>> wrote:
>>
>> Mano,
>>
>> The standard script library:
>>
>> http://cola.gmu.edu/grads/gadoc/library.html
>>
>> includes the script sdfopent.gs. It
>> takes two additional
>> arguments beyond the one for sdfopen. The
>> second argument
>> is a template, like "pre_%y4_%m2_%d2.nc",
>> and the
>> third is
>> a count of time steps in the entire series.
>> The first argument
>> would be the first path in the time series.
>> See:
>>
>> ftp://cola.gmu.edu/grads/scripts/sdfopent.gs
>>
>> -Hoop
>>
>> On 04/04/16 10:00,
>> gradsusr-request at gradsusr.org>
>> wrote:
>> > Date: Mon, 4 Apr 2016 18:27:49 +0900
>> > From: lpasmanoranjan <
>> lpasmanoranjan at gmail.com>
>> > Subject: [gradsusr] How to use template
>> option for .nc
>> file (there is
>> > no .ctl file)
>> > To: GrADS Users Forum <gradsusr at gradsusr.org
>> >
>> >
>> > Dear Users,
>> > I am having a problem in viewing the
>> following dataset as
>> template option.
>> > I have hourly dataset in .nc as following:
>> >
>> > 1995/01/pre_1995_01_01.nc
>> > 1995/01/pre_1995_01_02.nc
>> > 1995/01/pre_1995_01_03.nc
>> > 1995/01/pre_1995_01_04.nc
>> > 1995/01/pre_1995_01_05.nc
>> > 1995/01/pre_1995_01_06.nc
>> > and so on for 10 years
>> >
>> > *All individual datasets can be viewed in
>> grads with
>> sdfopen command*
>> >
>> > Can anybody please help me how to use
>> template option.
>> >
>> > Thank you for any kind of help or
>> suggestion in this regard.
>> >
>> > Kind Regards
>> > Mano
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
>> --
>> Kind Regards,
>> Mano
>> --
>> Kind Regards,
>> Mano
>> --
>> Kind Regards,
>> Mano
>> --
>> Kind Regards,
>> Mano
>>
>
--
Kind Regards,
Mano
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