Greetings Aaron,
What parts of the extended data model does nujan not support yet?
Thanks!
Sean
On Fri, Jun 30, 2017 at 11:36 AM, Aaron Braeckel <braeckel@xxxxxxxx> wrote:
> 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.
>> >>>
>> >>>
>> >>>
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>> >>
>> >>
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