Re: [netcdf-java] Writing a netcdf4 nc file

• To: "Lacoste Pierre (DAVIDSON)" <PLacoste@xxxxxx>
• Subject: Re: [netcdf-java] Writing a netcdf4 nc file
• From: Sean Arms <sarms@xxxxxxxx>
• Date: Mon, 25 Jul 2016 16:31:30 -0600

Greetings Pierre,

Which version of netcdf-java are you using, and have you successfully
installed the netCDF-C library?

https://www.unidata.ucar.edu/software/thredds/current/netcdf-java/reference/netcdf4Clibrary.html

If yes, are you using the latest released version of the C library?

Cheers,

Sean


On Tue, Jul 19, 2016 at 3:17 AM, Lacoste Pierre (DAVIDSON) <PLacoste@xxxxxx>
wrote:

> Hello,
>
>
>
> I try to use the Netcdf-java to create a netcdf4 file.
>
> I tried the example
> https://www.unidata.ucar.edu/software/netcdf/examples/programs/Sfc_pres_temp_wr.java
> and It’s well running.
>
> But I need to generate a netcdf4 and the example is in netcdf3. So, I
> change the line
>
>                 “dataFile =
> NetcdfFileWriter.createNew(NetcdfFileWriter.Version.netcdf3, filename);”
>
> By
>
> “dataFile = NetcdfFileWriter.createNew(NetcdfFileWriter.Version.netcdf4,
> filename);”
>
>
>
> But when I execute the test, I got the following error:
>
>
>
> Exception in thread "main" java.lang.NullPointerException
>
>                 at ucar.nc2.jni.netcdf.Nc4Iosp.flush(Nc4Iosp.java:3270)
>
>                 at
> ucar.nc2.NetcdfFileWriter.rewrite(NetcdfFileWriter.java:842)
>
>                 at
> ucar.nc2.NetcdfFileWriter.setRedefineMode(NetcdfFileWriter.java:832)
>
>                 at
> ucar.nc2.NetcdfFileWriter.close(NetcdfFileWriter.java:1019)
>
>                 at
> com.tests.Sfc_pres_temp_wr.main(Sfc_pres_temp_wr.java:131)
>
>
>
> Could you tell me how can I solve this problem?
>
>
>
> Thank for your help,
>
>
>
> Pierre
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• References:
  • [netcdf-java] Writing a netcdf4 nc file
    • From: Lacoste Pierre (DAVIDSON)