Re: getting ranges correct in concatenated files

Thanks, Dennis. Between your helpful NCL snip, and the output from ncks
that Gary Strand showed me, I've got the tools to do what I need. More
importantly, I don't have to make it any harder than necessary.

Mary Jo

On Sat, 16 Feb 2008, Dennis Shea wrote:

> Date: Sat, 16 Feb 2008 13:08:10 -0700
> From: Dennis Shea <shea_at_ucar.edu>
> To: <brodzik_at_nsidc.org>
> Cc: <ncl-talk_at_ucar.edu>
> Subject: Re: getting ranges correct in concatenated files
>
> Hi Mary Jo
>
> This is a netCDF Operator question ... not NCL related.
> It might be best to post to the NCO help forum.
> http://sourceforge.net/forum/forum.php?forum_id=9830
> -------
> That said .... there are two "_range" variables. The actual range
> of the data on the *current* file [eg]
> tmp:actual_range = -108.65, 43.24
>
> and the largest *possible* range of the variable
> tmp:valid_range = -200., 300.f;
>
> Perhaps, someone knowledgable in NCO can help.
> There is the NCO attribute editor: ncatted
>
> ======
> Since this is an NCL help forum .... Maybe the following would work.
> This assume you have a 'valid_range' or 'actual_range' attribute
>
> f = addfile("foo,nc", "w") ; NOTE the 'w"
>
> x = f->X
>
> x_at_valid_range = (/min(x),max(x)/)
>
> f->x_at_valid_range = x_at_valid_range
>
> good luck
> D
>
>
>
>
> Mary Jo Brodzik wrote:
> > I'm trying to create a netCDF file with a year of data, using ncrcat on a
> > set of individual files for the 8-day periods in that year. ncrcat behaves
> > just as I expect, resulting in variables that are concatenated along the
> > record dimension. I'm using no switches to ncrcat:
> >
> > % ncrcat -O outfile_name infile_list
> >
> > However, I have a requirement to include the attribute @valid_range for each
> > of the variables in my file, and I can tell from experimentation and from
> > the ncrcat documentation that the output @valid_range for each variable is
> > just set to whatever was in the first file input to ncrcat. So it doesn't
> > really reflect the full range of values in the concatenated file.
> >
> > Can anyone suggest how I could make the output @valid_range on the variables
> > actually reflect the range of values of the concatenated variable contents?
> >
> > Thank you,
> > Mary Jo Brodzik
> >
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > Mary Jo Brodzik, Lead Scientific Programmer, 303-492-8263
> > NSIDC/CIRES, Univ. of Colo. at Boulder, 449 UCB, Boulder, CO 80309-0449
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >
> > _______________________________________________
> > ncl-talk mailing list
> > ncl-talk_at_ucar.edu
> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> >
>
>

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Mary Jo Brodzik, Lead Scientific Programmer, 303-492-8263
NSIDC/CIRES, Univ. of Colo. at Boulder, 449 UCB, Boulder, CO 80309-0449
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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Received on Mon Feb 18 2008 - 12:26:45 MST