How to use

setExplodePercent

method

in

org.jfree.chart.plot.PiePlot

plot.setSectionPaint(KEY1, Color.green);
plot.setSectionPaint(KEY2, Color.red);
plot.setExplodePercent(KEY1, 0.10);
plot.setSimpleLabels(true);

/**
 * Sets the amount that a pie section should be exploded and sends a
 * {@link PlotChangeEvent} to all registered listeners.
 *
 * @param section  the section index.
 * @param percent  the explode percentage (0.30 = 30 percent).
 *
 * @deprecated Use {@link #setExplodePercent(Comparable, double)} instead.
 */
public void setExplodePercent(int section, double percent) {
  Comparable key = getSectionKey(section);
  setExplodePercent(key, percent);
}

/**
 * Handle pie plot customization
 * - get customization parameters from parameter Map and modify plot accordingly
 * @param parameters  macro parameters
 * @param plot  chart plot
 */
void handlePiePlotCustomization(Map parameters, PiePlot plot) {
  // Pie section label customization
  String pieSectionLabel = getStringParameter(parameters, "piesectionlabel", "%0%") // default to just show key
               .replaceAll("%0%", "\\{0\\}")  // convert to what jfreechart uses - unfortunately {and } cause problems in parameters
               .replaceAll("%1%", "\\{1\\}")
               .replaceAll("%2%", "\\{2\\}");
  plot.setLabelGenerator(new StandardPieSectionLabelGenerator(pieSectionLabel));
  // Pie section explode - just simple to start with, requires jfreechart 1.0.3 or above
  // - need a comma separated list of key=value pairs to support fully
  if (ChartUtil.isVersion103Capable()) {
    String pieSectionExplode = getStringParameter(parameters, "piesectionexplode", ""); // default to no key explode
    String explodeList[] = pieSectionExplode.split(",");
    for (String anExplodeList : explodeList) {
      if (StringUtils.isBlank(anExplodeList)) continue; /* Should skip if trimming string is blank */
      try {
        plot.setExplodePercent(anExplodeList.trim(), DEFAULT_PIE_EXPLODE);
      } catch (Exception exception) {
        log.debug("Ignore errors");
      }
    }
  }
}

pieplot.setExplodePercent(topApi, 0.20000000000000001D);

plot2.setExplodePercent("3", 0.25);
plot2.setLabelGenerator(labelGenerator);

private void initPlot(PiePlot plot, int chartType) {
  switch (chartType) {
    case TYPE_FISHEYE_PIE:
      //orient chart so labels will align nicely even if small slices of pie are present
      plot.setStartAngle(180);
      plot.setDirection(Rotation.ANTICLOCKWISE);
      break;
    case TYPE_CRUCIBLE_PIE:
      plot.setStartAngle(160);
      plot.setDirection(Rotation.CLOCKWISE);
      plot.setExplodePercent("Unreviewed", .25);
      plot.setLabelGenerator(null);
      break;
    default:
  }
}

plot.setExplodePercent(getKey(), getExplodedPercent());

pie.setExplodePercent( (Comparable) iter.next(), .30 );