[gradsusr] no discernable X coordinate

[Andrew Friedman]

Hi Anca,

One option is for you to specify directly the longtidue gridpoints using the XDEF LEVELS option:
http://www.iges.org/grads/gadoc/descriptorfile.html#XDEF

However, you may also be able to use some scripts by Jennifer Adams for CMIP5 output:
See this posting from the listserve: http://gradsusr.org/pipermail/gradsusr/2013-January/017089.html

Here’s more information about pre-projected data in GrADS:
http://www.iges.org/grads/gadoc/pdef.html

Andrew

On Dec 5, 2014, at 4:09 PM, anca bratu <anca.bratu at yahoo.com> wrote:

> Hi Andrew,
> I have tried with an ordinary linear X dimensions,but it's not working. I have used ncdump -v Lon nameofthefile but,as you can see in the file attached,the values are overwhelming(and the data is on many pages long;what you have in the file is only a snapshot)... What does it means?How should I write the X coordinate in the descriptor file? I have to say that I use data from CMIP5, rcp85 for sst.
> 
> Thank you for your help
> 
> Sent from Yahoo Mail on Android
> 
> From:"Andrew Friedman" <andfried at gmail.com>
> Date:Fri, Dec 5, 2014 at 2:26
> Subject:Re: [gradsusr] no discernable X coordinate
> 
> Hi Anca,
> 
> Here’s an example of a descriptor I used to open an annual sst file. In this case, I only specified TDEF since the X and Y dimensions were ok in the original. You can follow the same procedure for any dimension.
> 
> Andrew
> 
> DSET ^sst_output.nc
> TITLE Historical SST
> TDEF time 151 LINEAR 01Apr1853 1yr
> VARS 1
> sst=>sst
> ENDVARS
> 
> On Dec 4, 2014, at 4:46 PM, anca bratu <anca.bratu at yahoo.com> wrote:
> 
> > Hi Andrew,
> > 
> > Thank you for your answer.
> > Can you please, give me an example of such a descriptor for any file?
> > 
> > Thank you!
> > --------------------------------------------
> > On Wed, 12/3/14, Andrew Friedman <andfried at gmail.com> wrote:
> > 
> > Subject: Re: [gradsusr] no discernable X coordinate
> > To: "GrADS Users Forum" <gradsusr at gradsusr.org>
> > Date: Wednesday, December 3, 2014, 4:54 PM
> > 
> > Hi Anca,
> > 
> > Here are instructions for
> > constructing a descriptor file: http://www.iges.org/grads/gadoc/aboutgriddeddata.html#descriptor
> > The entry for xdfopen also has some examples:
> > http://www.iges.org/grads/gadoc/gradcomdxdfopen.html
> > 
> > Andrew
> > 
> > On
> > Dec 2, 2014, at 5:28 PM, anca bratu <anca.bratu at yahoo.com>
> > wrote:
> > 
> >> Hi,
> >> 
> >> My name is Anca
> > Bratu and I have a problem: 
> >> 
> > sdfopen_nameofthefile
> >> 
> > scanning_self-describing_file: nameofthefile
> >> gadsdf: SDF file has no discernable X
> > coordinate.
> >>  To open this file with
> > GrADS, use a descriptor file with an XDEF entry. 
> >>  Documentation is at http://www.iges.org/grads/gadoc/SDFdescriptorfile.html
> >> 
> >> Please, if you have
> > encountered this kind of problem, tell me exactly the steps
> > I must follow.
> >> 
> >> 
> > Thank you!
> >> 
> > _______________________________________________
> >> gradsusr mailing list
> >> 
> > gradsusr at gradsusr.org
> >> http://gradsusr.org/mailman/listinfo/gradsusr
> > 
> > 
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> 
> > 
> > 
> > _______________________________________________
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> 
> 
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