I have two Netcdf-4 files. Both are for the same region and same time interval.
The first contains two variables U and V. The second variables S and T. I need
to generate third Netcdf-4 file with four variables U, V, S, T. I had an idea
to make copy of the first file and add additional variables to the copy. What i
did:
- NetcdfFile fileUV = NetcdfFiles.open(fnameUV); // file with U and V
- NetcdfFile fileST = NetcdfFiles.open(fnameST); // file with S and T
- Nc4Chunking chunker = Nc4ChunkingStrategy.factory(type, deflateLevel,
shuffle);
- NetcdfFormatWriter.Builder builder =
NetcdfFormatWriter.createNewNetcdf4(NetcdfFileFormat.NETCDF4, outName, chunker);
- NetcdfCopier copier = NetcdfCopier.create(fileUV, builder); // copier UV-file
-> outfile
- NetcdfFile ncfileOut = copier.write(null); // do copy
- NetcdfFormatWriter writer = builder.build();
- ImmutableList<Variable> vST = fileST.getVariables(); // variables S and T
- for(var v : vST) writer.write(v, null); // add vriables to outfile
String 7 generates the exception java.lang.IllegalStateException: Group was
already built.
May be it is impossible to use the same builder for copying and adding
variables? Could anyone help me to solve my task correctly? Thanks in advance
Andreas Lieta
