Re: writing netcdf file along unlimited dimension

The NetcdfFileWriteable.write() signature says:

 /** Write data to the named variable. Must not be in define mode.
  * @param varName name of variable. IllegalArgumentException if variable name 
does not exist.
  * @param origin offset within the variable to start writing.
  * @param values write this array; must be same type and rank as Variable
  * @throws IOException
  */
 public void write(String varName, int [] origin, Array values) throws 
java.io.IOException, InvalidRangeException.

So the problem is it expects that the values array has same rank as variable. 
If it doesnt, i dont think its possible (in general, not in the scalar case) to 
figure out how to write the data. so i will leave it.




Ethan Davis wrote:
> I just answered a netcdf-java question about not having to read all data 
> before writing netcdf. I put together some sample code to send them. My 
> first stab was using Arrays with rank 0 but got some out of bounds 
> problems. It does fine if I use an Array of rank 1. Looks like with a 
> rank 0 array the NetcdfFileWriteable.write() calls the 
> N3iosp.writeData() with a sectionList that is empty which then does a 
> get(0) on an empty list.
>
> Probably a pretty quick fix but I haven't thought about it enough to 
> take a stab at it.
>
> Here's my code:
>
>  public void testOne()
>  {
>
>    String fileName = "testWriteAlongUnlimited.nc";
>    NetcdfFileWriteable ncfile = NetcdfFileWriteable.createNew( fileName, 
> true );
>    Dimension timeDim = new Dimension( "time", 
> Dimension.UNLIMITED.getLength(), true, true, false );
>    ncfile.addDimension( null, timeDim );
>    Dimension [] dims = { timeDim};
>    ncfile.addVariable( "time", DataType.INT, dims );
>    ncfile.addVariable( "temp", DataType.FLOAT, dims );
>    ncfile.addVariable( "pres", DataType.FLOAT, dims );
>
>    try
>    {
>      ncfile.create();
>    }
>    catch ( IOException e )
>    {
>      assertTrue( "Failed to create file <" + fileName + ">: " + 
> e.getMessage(),
>                  false);
>    }
>
>    ArrayInt.D0 timeArray = new ArrayInt.D0();
>    ArrayFloat.D0 tempArray = new ArrayFloat.D0();
>    ArrayFloat.D0 presArray = new ArrayFloat.D0();
>    for ( int i = 0; i < 10; i++ )
>    {
>      int[] origin = { i+1};
>      timeArray.set( i);
>      tempArray.set( i);
>      presArray.set( i);
>      try
>      {
>        ncfile.write( "time", origin, timeArray);
>        ncfile.write( "temp", origin, tempArray);
>        ncfile.write( "pres", origin, presArray);
>      }
>      catch ( IOException e )
>      {
>        assertTrue( "Failed to write file <" + fileName + "> at index= " 
> + i + ": " + e.getMessage(),
>                    false );
>      }
>      catch ( InvalidRangeException e )
>      {
>        assertTrue( "Bad range writing file <" + fileName + "> at index= 
> " + i + ": " + e.getMessage(),
>                    false );
>      }
>    }
>    try
>    {
>      ncfile.flush();
>      ncfile.close();
>    }
>    catch ( IOException e )
>    {
>      assertTrue( "Failed to flush/close file <" + fileName + ">: " + 
> e.getMessage(),
>                  false );
>    }
>  }