Hello,
a pure-Java library exists for writing netCDF 4 and HDF 5:
https://github.com/NCAR/nujan. We've not put much time into this recently
and the JNI/native alternative will have a lot more options and features,
but Nujan may be another option for you to consider.
Aaron
On Fri, Jun 30, 2017 at 11:29 AM, Hanns Holger Rutz <rutz@xxxxxx> wrote:
> I see -- and it's not possible to draw them in as standard Maven
> dependencies for the correct platforms? I think this works with other
> Java-C-bridging libraries such as OpenCV, for example:
>
> http://search.maven.org/#search%7Cga%7C1%7Copencv
>
> you have there linux-armhf.jar, linux-x86.jar, linux-x86_64.jar,
> macosx-x86_64.jar, windows-x86.jar etc.
>
> would it be possible to do that with NetCDF as well?
>
> best, .h.h.
>
>
> On 30/06/17 19:10, Sean Arms wrote:
> > Greetings!
> >
> > Currently, the only way to write netCDF-4 files is through the C
> interface:
> >
> > https://www.unidata.ucar.edu/software/thredds/current/
> netcdf-java/reference/netcdf4Clibrary.html
> >
> > As it stands, there isn't a pure implementation of HDF5 outside of the
> > C library, so pretty much everyone who writes netCDF needs to go
> > through the C library.
> >
> > Sean
> >
> >
> > On Fri, Jun 30, 2017 at 9:55 AM, Hanns Holger Rutz <rutz@xxxxxx> wrote:
> >> p.s. I use
> >>
> >> "edu.ucar" % "netcdf4" % "4.6.10"
> >>
> >> as library. perhaps I need to change this or use a different one?
> >>
> >>
> >> On 30/06/17 17:51, Hanns Holger Rutz wrote:
> >>> hi,
> >>>
> >>> so far I have used this
> >>>
> >>> nc2.NetcdfFileWriter.createNew(Version.netcdf3, location, null)
> >>>
> >>> this creates files with this type of header:
> >>>
> >>> 00000000 43 44 46 01 00 00 00 00 00 00 00 0a 00 00 00 04
> >>> |CDF.............|
> >>> 00000010 00 00 00 04 54 69 6d 65 00 00 00 b4 00 00 00 09
> >>> |....Time........|
> >>> 00000020 4c 6f 6e 67 69 74 75 64 65 00 00 00 00 00 00 0c
> >>> |Longitude.......|
> >>> 00000030 00 00 00 08 4c 61 74 69 74 75 64 65 00 00 00 24
> >>> |....Latitude...$|
> >>> 00000040
> >>>
> >>> now I have a problem where I have to include 64-bit long values, and
> >>> this seems to be unsupported: "long not support in netcdf-3"
> >>>
> >>> So I tried chaing this to
> >>>
> >>> nc2.NetcdfFileWriter.createNew(Version.netcdf4, location, null)
> >>>
> >>> now this gives me error that it wants to use C (???) libraries:
> >>>
> >>> Nc4Iosp: NetCDF-4 C library not present
> (jna_path='/usr/local/lib/',
> >>> libname='netcdf').
> >>>
> >>> What should I do? I need a solution that is cross-platform with
> >>> libraries pulled from a maven repository, no matter whether user runs
> >>> Linux, Windows, Mac.
> >>>
> >>> Can I get a pure Java solution that supports 64-bit long? How?
> >>>
> >>> thanks, .h.h.
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> NOTE: All exchanges posted to Unidata maintained email lists are
> >>> recorded in the Unidata inquiry tracking system and made publicly
> >>> available through the web. Users who post to any of the lists we
> >>> maintain are reminded to remove any personal information that they
> >>> do not want to be made public.
> >>>
> >>>
> >>> netcdf-java mailing list
> >>> netcdf-java@xxxxxxxxxxxxxxxx
> >>> For list information or to unsubscribe, visit:
> http://www.unidata.ucar.edu/mailing_lists/
> >>>
> >>
> >>
> >> _______________________________________________
> >> NOTE: All exchanges posted to Unidata maintained email lists are
> >> recorded in the Unidata inquiry tracking system and made publicly
> >> available through the web. Users who post to any of the lists we
> >> maintain are reminded to remove any personal information that they
> >> do not want to be made public.
> >>
> >>
> >> netcdf-java mailing list
> >> netcdf-java@xxxxxxxxxxxxxxxx
> >> For list information or to unsubscribe, visit:
> http://www.unidata.ucar.edu/mailing_lists/
>
> _______________________________________________
> NOTE: All exchanges posted to Unidata maintained email lists are
> recorded in the Unidata inquiry tracking system and made publicly
> available through the web. Users who post to any of the lists we
> maintain are reminded to remove any personal information that they
> do not want to be made public.
>
>
> netcdf-java mailing list
> netcdf-java@xxxxxxxxxxxxxxxx
> For list information or to unsubscribe, visit:
> http://www.unidata.ucar.edu/mailing_lists/
>
