Re: [netcdf-java] NetCDF-java 4.0 release?


Mark Balonkin wrote:
> Hi John,
> 
>  
> 
> We are thinking about implementation of java wrapper on “C” netcdf library. 
> Basically because we need 
large file support and also would be good to have better
performance. We don’t need the whole functionality,
just a basic writing. But anyway it’s still a bunch of work.


the latest 4.0 library supports writing netcdf-3 large files, but
not netcdf-4.

i doubt performance is a good enough reason to do all that work, but
it would be interesting to see some timings.


> 
>  
> 
> Could you comment a little bit about possible issues? Of course, if you have 
> any clue. 
> I see you’ve mentioned that next java library will use “C” library as well.

only to support netcdf-4 writing, and its still a maybe.

the issue from my POV is what API do you implement? we will
implement the Java-Netcdf IOSP interface. We are experimenting with
JNA, which uses reflection to make the programming easier, at the
cost of some efficiency.

> 
>  
> 
> Thanks,
> 
> Mark Balonkin
> 
>  
> 
>  
> 
>  
> 
>>Hi all:
> 
>> 
> 
>>There is no release date on NetCDF 4 write capabilities, as we are still 
>>evaluating its feasibility. Its >unlikely to be a 100% Java, but it may be 
>>feasible to use jni to access the C netcdf/hdf5 libraries. If that >happens, 
>>its probably a year away.
> 
>> 
> 
>>Note that reading netdf4 and hdf5 is already supported in the library.
> 
>> 
> 
>>John
> 
>> 
> 
>>JulioSergio wrote:
> 
>>>/ Hi Tore,/
> 
>>>/ I have the same expectations about the release of a NetCDF-java version/
> 
>>>/ supporting NetCDF 4 write capabilities as you. Does anyone reading this/
> 
>>>/ forum messages have any idea about it?/
> 
>>>/ /
> 
>>>/ Thanks,/
> 
>>>/ /
> 
>>>/ Sergio./
> 
>>>/ /
> 
>>>/ /
> 
>>>/ Tore Nilsen wrote:/
> 
>>>>/ Hi,/
> 
>>>>/ Is there an updated timeline when we can expect NetCDF 4 write/
> 
>>>>/ capabilities in NetCDF-java?/
> 
>>>>/ Thanks,/
> 
>>>>/ Tore/
> 
>>>>/ /
> 
>>>>/ Tore Nilsen/
> 
>>>>/ EM SW architect - OTC/
> 
>>>>/ Mobile: +4790144750/
> 
>>>>/ Office:  +4767207844/
> 
>>>>/ Email: Tore.Nilsen at westerngeco.com 
>>>><http://mailman.unidata.ucar.edu/mailman/listinfo/netcdf-java>/
> 
>>>>/ /
> 
>>>>/ /
> 
>  
> 
> 
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