Hi John:
You probably want to use the Java-Netcdf library. It can be done now by opening
an opendap URL as a NetcdfFile, then writing that to a file:
public static void main( String arg[]) throws IOException {
String datasetIn =
"http://motherlode.ucar.edu:9080/thredds/dodsC/nexrad/level2/KVTX/20070206/Level2_KVTX_20070206_2341.ar2v";;
String filenameOut = "C:/temp/testWriteRadar.nc";
NetcdfFile ncfileIn = ucar.nc2.dataset.NetcdfDataset.openFile(datasetIn,
null);
ucar.nc2.FileWriter.writeToFile( ncfileIn, filenameOut);
}
This writes a netcdf-3 file. The difficulty is when there is something in a
dods URL that doesnt fit into a netcdf-3 file, eg a Structure. Then it will
barf. We hope to address this long term by coverging DAP4 and the netcdf data
model together, and using netcdf-4 file format (which is not yet available).
There are also other things still to do, like make FileWriter do something
intelligent with Structures, etc.
John Chamberlain wrote:
Hi John, I am looking at potential mechanisms for writing a NetCDF file.
I want to output data which is DAP format to NetCDF format. I have the
DAP stuff all organized no problem into objects etc. What do you
recommend as some of the ways to output a NetCDF file?
I have seen the following page:
http://www.unidata.ucar.edu/software/netcdf/docs/
This page has links to a "best practices" document and also a
"conventions" document, but I could not find an exact spec for NetCDF here.
Best regards, John Chamberlain
