[ncl-talk] How to combine many nc files from different folders

[Dave Allured - NOAA Affiliate]

Recently there are some known conditions that can cause unknown format and
corrupted file messages for valid netcdf files.  I recommend diagnosing
individual files, not using NCL, before dismissing an entire file set as
corrupted.  Try this black magic first and see if NCL can then read the
files:

    Bash:       HDF5_USE_FILE_LOCKING=FALSE
    C-shell:    setenv HDF5_USE_FILE_LOCKING FALSE

If that does not work, then try these tests.  The first two are guaranteed
to work on all file types.

    file data.nc
    od -c -N16 data.nc
    h5dump -BH data.nc
    ncdump -k data.nc
    ncdump -sh data.nc

If the problem has not become obvious, then post output from these tests to
this mailing list.  If more than 40 lines long, put all output into a text
file with name ending in .txt, and send as a file attachment to your
message.  Please do not send any screen shots.

Also send your NCL version number and type of computer system.

--Dave


On Tue, Sep 17, 2019 at 3:27 PM Dennis Shea via ncl-talk <ncl-talk at ucar.edu>
wrote:

> As the message states, the file is "*corrupted*".  This is not an NCL
> issue.
>
> [1] delete the file[s] and try reacquiring them
> [2] Possibly, the source files are corrupted.
> ---
> FYI: There are some Persiann examples.
> *https://www.ncl.ucar.edu/Applications/HiResPrc.shtml*
> <https://www.ncl.ucar.edu/Applications/HiResPrc.shtml>
>
>
> On Tue, Sep 17, 2019 at 12:15 PM Setareh Rahimi <setareh.rahimi at gmail.com>
> wrote:
>
>> Dear Adam, and Dennis,
>> Thanks for your help. hopefully I could combine those files together, but
>> NCL tells there is something wrong with some files (attached image). In
>> order to check what could be wrong, I redownload 1983 files again and got
>> many warning for the second time. Any suggestion to remove those warning,
>> please?
>> Best wishes,
>>
>
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