Dear Daniele,
Thanks for your answer.
I do both of the following:
- upload a netcdf file packaged in a zip through the REST API
curl -u user:pwd -XPUT -H "Content-type:application/zip" --data-binary
@netcdf.zip
https://xxxx/geoserver/rest/workspaces/test/coveragestores/testnetcdf/file.netcdf
- upload a netcdf file through the Web interface as a NetCDF store
It is then a NetCDF itself that I cannot encode as NetCDF… Are some
configurations required to handle it ?
Cheers,
Fanny
From: [email protected] [mailto:[email protected]] On Behalf Of
Daniele Romagnoli
Sent: Friday, October 28, 2016 11:27 AM
To: MARTIN, FANNY
Cc: [email protected]
Subject: Re: [Geoserver-users] NetCDF-4 Native Libraries installation
Dear Fanny,
what format of input coverageStore are you trying to encode as NetCDF?
NetCDF output is only supported for input coverages being served by a
coverageStore leveraging on StructuredGridCoverage2DReader.
http://docs.geoserver.org/stable/en/user/extensions/netcdf-out/index.html#current-limitations
StructuredGridCoverage2DReaders expose the underlying dimensions so that the
GetCoverage of WCS2.0 can setup a stack (a GranuleStack) of GridCoverages and
assign related input dimension values to each element of the stack.
Trivial example:
GridCoverage2D #0 of the stack is related to time=T0 and elevation=Z0,
GridCoverage2D #1 of the stack is related to time=T0 and elevation=Z1,
GridCoverage2D #2 of the stack is related to time=T1 and elevation=Z0,
GridCoverage2D #3 of the stack is related to time=T1 and elevation=Z1)
This information will then be used by the NetCDF Writer to setup proper NetCDF
dimensions on output and setup proper multidimensional data array.
So if you have an ImageMosaic on top of a Multidimensional dataset (having
different times and elevations, as an instance) you can encode it as a NetCDF.
Indeed, at the moment, the only Coverage Reader formats implementing a
StructuredGridCoverage2DReader are the ImageMosaic and the NetCDF itself.
To summarize: the "java.lang.IllegalArgumentException: NetCDF encoding only
supports granuleStack coverages" isn't related to a NetCDF4 native library
issue.
That is a different topic:
NetCDF-4 C library not present (jna_path='null', libname='netcdf') is a simple
warning reporting that your GeoServer won't be able to encode output to
NetCDF4-Classic whilst it will be able to encode NetCDF3.
If you want to have NetCDF4-C supported (as an instance to leverage on HDF5
compression capabilities), you need to properly install native libraries.
http://docs.geoserver.org/2.8.1/user/extensions/netcdf-out/nc4.html#linux-install
I know you have already checked these instructions but at the moment I have no
additional feedbacks on the Native Library building topic.
We never encountered that problem before. (It seems it is unable to find the
required HDF5 lib so you may want to double check all the dependencies are
available).
Cheers,
Daniele
On Fri, Oct 28, 2016 at 9:34 AM, MARTIN, FANNY
<[email protected]<mailto:[email protected]>> wrote:
Dear all,
While trying to retrieve a NetCDF4 thanks to WCS request, I get the following
error:
java.lang.IllegalArgumentException: NetCDF encoding only supports granuleStack
coverages
NetCDF encoding only supports granuleStack coverages
I guess the error is due to the failed installation of the NetCDF-4 Native
Library. I get the following error when strating Geoserver:
NetCDF-4 C library not present (jna_path='null', libname='netcdf').
And this one at the installation of the NetCDF C Library:
checking for library containing H5Fflush... configure: error: Can't find or
link to the hdf5 library. Use --disable-netcdf-4, or see config.log for errors.
make: *** No rule to make target 'check'. Stop.
I try to install the NetCDF Output Format plugin in a Geoserver 2.8.1 Tomcat
installation. For this purpose, I have followed the instruction given at
http://docs.geoserver.org/2.8.1/user/extensions/netcdf-out/nc4.html#nc4. After
some searchs on the internet, the problem is mostly solved with the use of the
CPPFLAGS and LDFLAGS, flags that I already use... Any other hints welcome !
Thanks in advance,
Fanny
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