Re: [netcdf-java] 4.1.14 bug in ucar.nc2.NetcdfFileWriteable.write(String, int[], Array)

• To: Christian Ward-Garrison <cwardgar@xxxxxxxx>
• Subject: Re: [netcdf-java] 4.1.14 bug in ucar.nc2.NetcdfFileWriteable.write(String, int[], Array)
• From: John Caron <caron@xxxxxxxxxxxxxxxx>
• Date: Thu, 04 Mar 2010 18:38:12 -0700

release Version 4.1.20100305.0017 should fix this problem


Christian Ward-Garrison wrote:

The test case below should demonstrate the bug pretty well. Note that it did not exist in 4.0.

import java.io.File;
import java.io.IOException;
import ucar.ma2.Array;
import ucar.ma2.DataType;
import ucar.ma2.InvalidRangeException;
import ucar.nc2.Dimension;
import ucar.nc2.NetcdfFile;
import ucar.nc2.NetcdfFileWriteable;

public class Foo {

public static void main(String[] args) throws IOException, InvalidRangeException {

        File tempFile = File.createTempFile("foo", "nc");
        tempFile.deleteOnExit();

NetcdfFileWriteable ncWriteable = NetcdfFileWriteable.createNew(tempFile.getAbsolutePath(), false);

        try {

Dimension timeDim = ncWriteable.addUnlimitedDimension("time"); ncWriteable.addVariable("time", DataType.INT, new Dimension[]{timeDim}); ncWriteable.addVariableAttribute("time", "units", "hours since 1990-01-01");

            ncWriteable.create();

            Array timeData = Array.factory(DataType.INT, new int[]{1});
            int[] time_origin = new int[] {0};

            for (int time = 0; time < 10; time++) {
                timeData.setInt(timeData.getIndex(), time * 12);
                time_origin[0] = time;
                ncWriteable.write("time", time_origin, timeData);
            }

// Prints "0 12 24 36 48 60 72 84 96 108", the expected result.

            System.out.println(ncWriteable.readSection("time"));
        } finally {
            ncWriteable.close();
        }

        NetcdfFile ncFile = NetcdfFile.open(tempFile.getAbsolutePath());
        try {
            // Prints "0 0 12 0 24 0 36 0 48 0".
            System.out.println(ncFile.readSection("time"));
        } finally {
            ncFile.close();
        }
    }
}

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• References:
  • [netcdf-java] 4.1.14 bug in ucar.nc2.NetcdfFileWriteable.write(String, int[], Array)
    • From: Christian Ward-Garrison