/**
* Define a data legend in the graph window
*
* @param x data position of the legend.
* @param y data position of the legend.
* @param text text to display in the legend
*/
public void legend(double x, double y, String text) {
if (text == null) {
legend_text = null;
return;
}
if (legend_text == null) legend_text = new TextLine(text);
else legend_text.setText(text);
legend_text.setJustification(TextLine.LEFT);
legend_dx = x;
legend_dy = y;
legend_ix = 0;
legend_iy = 0;
}
