[ncl-talk] how to get the dimension size in netcdf file

[Dennis Shea]

Is this what you want?

Remember 'f' (below) has a dual nature ... It is both a variable and a file
reference

   f = addfile("...","r")

   dNames= getvardims(f)
   dSizes   = getfiledimsizes(f)
   print (dNames+"   "+dSizes)


On Fri, Apr 24, 2015 at 2:45 PM, LeiTing <leiting2002 at hotmail.com> wrote:

> Dave and Alan,
> My apology for causing that misunderstanding.
> Dave, you are right! I missed that function is aksing for a dim size of a
> variable.
> In my case, those dimensions are only defined however not used for any
> variables, which are still significant.
> Thanks again.
> Best,
> Ting
>
> > Date: Fri, 24 Apr 2015 14:25:53 -0600
> > Subject: Re: [ncl-talk] how to get the dimension size in netcdf file
> > From: dbrown at ucar.edu
> > To: abrammer at albany.edu
> > CC: leiting2002 at hotmail.com; ncl-talk at ucar.edu
>
> >
> > getfilevardimsizes gets the sizes of the dimensions the apply to a
> > specific variable. I thought the question was how to get the size of a
> > dimension by name from the file without specifying a particular
> > variable.
> > -dave
> >
> >
> > On Fri, Apr 24, 2015 at 12:53 PM, Alan Brammer <abrammer at albany.edu>
> wrote:
> > > Isn't that functionality in this function?
> > >
> https://www.ncl.ucar.edu/Document/Functions/Built-in/getfilevardimsizes.shtml
> > >
> > >
> > > Alan.
> > >
> > > On 24 April 2015 at 14:36, David Brown <dbrown at ucar.edu> wrote:
> > >>
> > >> Well we would need to create another function to do that. We will
> > >> consider it. Thanks for the suggestion.
> > >> -dave
> > >>
> > >> On Fri, Apr 24, 2015 at 12:32 PM, LeiTing <leiting2002 at hotmail.com>
> wrote:
> > >> > Dave,
> > >> > Thank you so much. That is already the solution I need.
> > >> > However, can NCL be "smarter" that ,say, I can directly ask for the
> size
> > >> > of
> > >> > a named dimension?
> > >> > I know I can do it after using the function you pointed out,
> however,
> > >> > I'm
> > >> > just wondering if there are some tip that directly do it.
> > >> > Thanks a lot.
> > >> > Ting
> > >> >
> > >> >> Date: Fri, 24 Apr 2015 12:01:50 -0600
> > >> >> Subject: Re: [ncl-talk] how to get the dimension size in netcdf
> file
> > >> >> From: dbrown at ucar.edu
> > >> >> To: leiting2002 at hotmail.com
> > >> >> CC: ncl-talk at ucar.edu
> > >> >
> > >> >>
> > >> >> Hi Ting,
> > >> >> getfiledimsizes is the function to use.
> > >> >> See
> > >> >>
> > >> >>
> http://www.ncl.ucar.edu/Document/Functions/Built-in/getfiledimsizes.shtml
> > >> >>
> > >> >> The example shows how to get the dimensions names along with the
> sizes.
> > >> >> -dave
> > >> >>
> > >> >>
> > >> >> On Fri, Apr 24, 2015 at 10:12 AM, LeiTing <leiting2002 at hotmail.com
> >
> > >> >> wrote:
> > >> >> > Dear Ncl folks,
> > >> >> > I apologize first if this is a duplicated question though I
> haven't
> > >> >> > found
> > >> >> > it.
> > >> >> > I have a netcdf file (the "sparse grid" by NSSL), with ncdump
> output
> > >> >> > as
> > >> >> > ^^^^^^^^^^^^
> > >> >> > dimensions:
> > >> >> > Lat = 236 ;
> > >> >> > Lon = 355 ;
> > >> >> > pixel = 12596 ;
> > >> >> > variables:
> > >> >> > float RefQC(pixel) ;
> > >> >> > ..............................
> > >> >> > VV
> > >> >> >
> > >> >> > I want to get the dimension lat and lon, which can 't be
> obtained by
> > >> >> > ,say,
> > >> >> > dimsize (RefQC).
> > >> >> > They are also not global attributes.
> > >> >> > Hence, I 'm lost on how to access those definitions of "lat" and
> > >> >> > "lon"
> > >> >> > in
> > >> >> > the netcdf file.
> > >> >> > Your help is appreciated.
> > >> >> > Best wishes,
> > >> >> > Ting
> > >> >> >
> > >> >> >
> > >> >> > _______________________________________________
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> > >> >> >
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> > >
>
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