INTViewer for Plugin Developers - Working with PointSet Data

Working with PointSet Data

Note: You will need to include PointSetData to your Module Dependencies list.

Loading a pointset from a file

import com.interactive.intviewerapi.data.IData;

    import com.interactive.intviewerapi.data.pointset.IPointSetData;

    import com.interactive.intviewerapi.data.pointset.IPointsetDataCollection;

...

    try {

        IPointSetData hd = IData.factory.createNewInstance(filePath, IPointSetData.class);

    } catch (Exception ex) {

        DialogManager.getDefault().showMessageDialog("Error loading pointset: " + filename,

         "Error Loading Pointset", DialogManager.ERROR);

        return;

    List<IKeyRange> klist = hd.getDataRange();

    for (IKeyRange kr:klist) {

        System.out.println(kr);

Using the pointset file chooser

To select one dataset:

import com.interactive.intviewerapi.data.ISingleDataChooser;

   // get the chooser for pointset data type

   ISingleDataChooser<IPointSetData> singleChooser = ISingleDataChooser.Factory.createNewInstance(IDataChooser.POINTSET);

   // popup the chooser dialog

   int rc = singleChooser.setDataChooserVisible(true);

   if (rc == JFileChooser.APPROVE_OPTION) {

      IPointSetData pointSetData = singleChooser.getSelectedData();

To select multiple datasets:

import com.interactive.intviewerapi.data.IMultipleDataChooser;

   // get the file chooser for pointset data type

   IMultipleDataChooser<IPointSetData> multipleChooser = IMultipleDataChooser.Factory.createNewInstance(IDataChooser.POINTSET);

   // popup the chooser dialog

   int rc = multipleChooser.setDataChooserVisible(true);

   if (rc == JFileChooser.APPROVE_OPTION) {

      for (IPointSetData pointSetData: multipleChooser.getSelectedData()) {

Creating a pointset from scratch

You can use the PointSetUtil.createPointSetData method to create a pointset from scratch. The time key should be specified using the setTimeKey method.

    IPointSetData hd = PointSetUtil.createPointSetData("tmp",

           new FieldDesc[]{

               new FieldDesc("INLINE", 0, true),

               new FieldDesc("XLINE", 1, true),

               new FieldDesc("Time", 2, true),

               new FieldDesc("Amplitude", 3)

});

    hd.setTimeKey(2);

Getting information about the data keys

Range keys provide information about how to access the horizon data. They can be accessed as follows:

List<IKeyRange> keyRangeList = hd.getDataRange();

Unlike in horizons where the time key is usually not indexed, the last key of a pointset dataset can be the Time key. The key names of a pointset are typically INLINE, XLINE and Time.Amplitude is usually a non-indexed attribute.

Adding points

The following example shows how to populate the empty pointSet created in the previous section.

    import com.interactive.intviewerapi.data.PointData;

...

    for (int inline= 0; inline < 400; inline++) {

        for (int xline = 0; xline < 400;  xline++) {

            PointData pd = new PointData(4);

            pd.setValues(new float[] {inline, xline,

                inline*0.1f, (xline+inline)*13.45f});

            hd.addPoint(pd);

Each time a point is added, a PointDataEvent is sent. This can cause performance issues when a large number of points has to be added. Wrap this code inside a IPointSetData.update method to reduce the event overhead.

    hd.update(new Runnable() {

       @Override

       public void run() {

          for (int inline= 0; inline < 400; inline++) {

             for (int xline = 0; xline < 400;  xline++) {

                PointData pd = hd.createPointData();

                pd.setValues(new float[] {inline, xline,

                   inline*0.1f, (xline+inline)*13.45f});

                hd.addPoint(pd);

});

Deleting points

We delete all the points within INLINE 20-21 and XLINE 30-31.

    import com.interactive.intviewerapi.data.IPointSelection;

    import com.interactive.intviewerapi.data.KeyRange;

    import com.interactive.intviewerapi.data.query.RangeQuery;

...

    RangeQuery rq = new RangeQuery();

    rq.addKeyRange(new KeyRange("INLINE", 20, 21 ));

    rq.addKeyRange(new KeyRange("XLINE", 30, 31 ));

    IPointSelection ps = hd.select(rq);

    hd.delete(ps);

Querying points

We retrieve all the points for INLINE 40.

    RangeQuery rq = new RangeQuery();

    rq.addKeyRange(new KeyRange("INLINE", 40, 40 ));

    IPointSelection ps = hd.select(rq);

    List<PointData> dataList = ps.getData();

Saving a pointset

You could do the following to save a pointset:

    ISingleDataSaver ds = ISingleDataSaver.Factory.createNewInstance(IDataChooser.POINTSET);

    if (ds.setDataSaverVisible(true, pointsetData.getDataPath()) == JFileChooser.APPROVE_OPTION) {

        FileObject fo = (FileObject) ds.saveDataAndWait(pointsetData);

        String path = FileUtil.toFile(fo).getAbsolutePath();

        if (pointsetData.getDataPath() != null || pointsetData.getDataPath().length() != 0) {

                pointsetData.setDataPath(path);

This would display a dialog to let the users select the fileName in which they want to save the IPointSetData.

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