[ncl-talk] Joining files together with varying dimension sizes

[Guido Cioni]

It shouldn't be a problem, along_track is still an integer as dimension...
Did you try with the command suggested on the webpage that I sent you? Did
you try with CDO, which sometime is smarter with “complicated" files?
Otherwise you can try to open the nc file with ncl or fortran and manually
modify the name of the dimensions to something more default.

Are you files big? Otherwise I can have a look On them and see what it's
working
Il 26 apr 2016 8:58 PM, "Andrew Kren - NOAA Affiliate" <andrew.kren at noaa.gov>
ha scritto:

Hi Guido,

I tried NCO, but it gave me this error, presumably because my time
coordinate is called "along_track" and not "time". Is there a workaround
for this?

On Tue, Apr 26, 2016 at 11:27 AM, Guido Cioni <guidocioni at gmail.com> wrote:

> Hi Andrew,
> I would suggest you to merge data together BEFORE reading them into NCL.
> You can easily do that either with NCO and the command ncrcat (see here
> http://research.jisao.washington.edu/data_sets/nco/#example8) or using
> CDO with the merge option (see here for the complete guide
> https://www.rsmas.miami.edu/users/rajib/cdo.pdf). These methods will work
> *without* problems as long as you have a well-defined time coordinate in
> your files and the vertical levels are always the same.
> Cheers
>
> Guido Cioni
> http://guidocioni.altervista.org
>
>
>
>
> Il giorno 26 apr 2016, alle ore 19:22, Andrew Kren - NOAA Affiliate <
> andrew.kren at noaa.gov> ha scritto:
>
> Dear NCL Talk,
>
> I have data that is netcdf format of various aircraft microwave
> retrievals. These retrievals of temperature, moisture, etc, are in units of
> (lev,time) in each file. I want to join all of the files together so that I
> can compare the data to dropsondes. However, when I do the addfiles
> feature, and grab the data using temp_hamsr = factor*(short2flt(q[:]->ham_airT))-273.15,
> it gives me this error:
>
> warning:File
> /scratch4/BMC/shout/Andrew.Kren/hamsr_data/2011/HS3/L2/HAMSR_L2_20110908T185915_20110909T185423_v01.nc
> dimension sizes do not conform to others in list; skipping file
> warning:A valid instance of variable ham_airT was not found in one or more
> elements of the file list
>
> I know what this error means after looking it up online and on the NCL
> help page. It is because my leftmost dimension is not time (level instead),
> which is required to merge them together. Is there any workaround to do
> this, like reorder when reading in, with what format my data is in?
> Basically I want to make my code portable so I can join any number of files
> for a particular storm case, since not all cases have the same amount of
> time retrievals.
>
> I also attached an ncl_filedump output of the format of the data I am
> reading. The along track metadata refers to time dimension in this case.
>
> Thanks,
>
> --
> Andrew Kren, PhD
> Research Scientist I, Global Observing Systems Analysis (GOSA) Group
> NOAA ESRL Global Systems Division (Rm 3C515)
> 325 Broadway, Boulder, CO 80305
> (303) 497-5418
> <format_file.txt><compare_AVAPS_HAMSR_HS3_2011.ncl>
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>


-- 
Andrew Kren, PhD
Research Scientist I, Global Observing Systems Analysis (GOSA) Group
NOAA ESRL Global Systems Division (Rm 3C515)
325 Broadway, Boulder, CO 80305
(303) 497-5418
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