/**
* Display the tree rooted at node tn in the graph as a dendogram.
*
* @param tn the root node of the tree to display
*/
private void display(TreeNode tn) {
double[] segs = dendogram(tn);
double distance = 10.;
if (tn instanceof Cluster) {
distance = ((Cluster) tn).getSimilarity();
} else {
distance = ((DefaultMutableTreeNode) tn).getDepth();
}
gs.setData(segs, GraphDataModel.FORMAT_XY);
graph.getXAxis().setMin(distance);
graph.getXAxis().setMax(0.);
graph.getYAxis().setMin(tm.getRowCount() - .5);
graph.getYAxis().setMax(-.5);
repaint();
}
/**
* Return a label for the given point on the graph axis
*
* @param value the value on the graph
* @return the label for the given value
*/
private String getLeafLabel(double value) {
String label = Double.toString(value);
try {
int v = (int) value;
int r = idxMap.getSrc(v);
if (r < 0 || r >= tm.getRowCount()) {
return "";
}
if (labelColumn >= 0 && labelColumn < tm.getColumnCount()) {
Object o = tm.getValueAt(r, labelColumn);
return o != null ? o.toString() : "";
}
} catch (Exception ex) {
ExceptionHandler.popupException("" + ex);
}
try {
label = Integer.toString((int) value);
} catch (Exception ex) {
ExceptionHandler.popupException("" + ex);
}
return label;
}