[ncl-talk] ncclose: ncid 131072: NetCDF: Can't open HDF5 attribute

[Dennis Shea]

This [netCDF-4 file size] has been discussed in ncl-talk before. Please
search the archives.
--
It has to do with the netCDF-4 '*chunk size*' used by NCL.  A JIRA ticket
has been opened.

NCAR Command Language / *Defect NCL-2757*
*NetCDF-4 file with unlimited time dimension size has abnormally large size
*

You can change the chunk size: see

*http://www.ncl.ucar.edu/Document/Functions/Built-in/filechunkdimdef.shtml*
<http://www.ncl.ucar.edu/Document/Functions/Built-in/filechunkdimdef.shtml>

You may have to experimet.
======

*I suggest trying just writing netCDF-3 [the default]*
Good luck


On Tue, Aug 21, 2018 at 8:37 AM, Ehsan Taghizadeh <ehsantaghizadeh at yahoo.com
> wrote:

> Hi,
> I used attached script (prc_sum_write.ncl) which has been provided by
> ncl-talk to sum precipitation in different time steps. In ncl-6.5 I
> encountered following message:
>     ncclose: ncid 131072: NetCDF: Can't open HDF5 attribute
> It seems the script does summation correctly, however reset wrong
> date/time! (cdoout6.5.dat in attached files)
> The script works correctly in ncl-6.4; however the problem with ncl-6.4
> was about following line:
>     filedimdef(fo,"time",-1,True)      ; make time UNLIMITED
> which produced a much bigger size output. Same is true in ncl-6.5 which
> the output without above line will have 755 KB size and the output with
> above line will have 24.0 MB. However the date/time in output file for
> ncl-6.4 are correct (cdoout6.4.dat in attached files). I also attached
> output files from both version of ncl in small size (commented
> filedimdef(fo,"time",-1,True)).
> Should I use ncl-6.4 with this script or I did something wrong? I'll be
> thankful for any help.
>
>
> Sincerely
> Ehsan
>
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