public int getLength() {
FlatField fld = getAdaptedFlatField();
if (fld == null) {
return 0;
}
return fld.getLength();
}
/** create parallel coordinates display for data */
public static void parallel(DisplayImpl display, FlatField data)
throws VisADException, RemoteException {
FunctionType ftype = (FunctionType) data.getType();
RealType index = (RealType) ftype.getDomain().getComponent(0);
RealTupleType range = (RealTupleType) ftype.getRange();
int ncoords = range.getDimension();
int nrows = data.getLength();
Set index_set = data.getDomainSet();
float[][] samples = data.getFloats(false);
RealType x = RealType.getRealType("coordinate");
RealType y = RealType.getRealType("value");
SetType xy = new SetType(new RealTupleType(x, y));
FunctionType ptype = new FunctionType(index, xy);
FieldImpl pfield = new FieldImpl(ptype, index_set);
for (int j = 0; j < nrows; j++) {
float[][] locs = new float[2][ncoords];
for (int i = 0; i < ncoords; i++) {
locs[0][i] = i;
locs[1][i] = samples[i][j];
}
Gridded2DSet set = new Gridded2DSet(xy, locs, ncoords);
pfield.setSample(j, set, false);
}
// create a DataReference for river system
DataReference parallel_ref = new DataReferenceImpl("parallel");
parallel_ref.setData(pfield);
display.addMap(new ScalarMap(x, Display.XAxis));
display.addMap(new ScalarMap(y, Display.YAxis));
// enable axis scales
display.getGraphicsModeControl().setScaleEnable(true);
// link display to parallel display
display.addReference(parallel_ref);
}