protected XYMultipleSeriesDataset buildDataset(String[] titles, List<double[]> xyValues) {
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
XYSeries series = getXYSeries(titles[0], xyValues.get(0), xyValues.get(1));
dataset.addSeries(series);
// we may have trend line data as well
if (titles.length == 2 && xyValues.size() == 3) {
series = getXYSeries(titles[1], xyValues.get(0), xyValues.get(2));
dataset.addSeries(series);
}
return dataset;
}
/**
* Builds a bar multiple series dataset using the provided values.
*
* @param titles the series titles
* @param values the values
* @return the XY multiple bar dataset
*/
protected XYMultipleSeriesDataset buildBarDataset(String[] titles, List<double[]> values) {
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
int length = titles.length;
for (int i = 0; i < length; i++) {
CategorySeries series = new CategorySeries(titles[i]);
double[] v = values.get(i);
int seriesLength = v.length;
for (int k = 0; k < seriesLength; k++) {
series.add(v[k]);
}
dataset.addSeries(series.toXYSeries());
}
return dataset;
}
public void setRegion(String region) {
this.currentRegion = region;
renderer.setChartTitle(region);
renderer.getSeriesRendererAt(0).setColor(colors[viewMode]);
((XYSeriesRenderer) renderer.getSeriesRendererAt(0))
.setFillBelowLineColor(0x33000000 | colors[viewMode]);
if (getComponentForm() != null) {
XYMultiSeriesTransition t = new XYMultiSeriesTransition(chart, dataSet);
RegionData[] rdArr = data.getRegionData(region);
for (RegionData rd : rdArr) {
switch (viewMode) {
case VIEW_MODE_POPULATION:
dataSet.getSeriesAt(0).setTitle("Population");
t.getBuffer().getSeriesAt(POPULATION).add(rd.year, rd.pop);
break;
case VIEW_MODE_DENSITY:
dataSet.getSeriesAt(0).setTitle("Density (People per square mile)");
t.getBuffer().getSeriesAt(POPULATION).add(rd.year, rd.density);
break;
default:
throw new RuntimeException("Illegal view mode.");
}
// t.getBuffer().getSeriesAt(DENSITY).add(rd.year, rd.density);
// t.getBuffer().getSeriesAt(RANK).add(rd.year, rd.rank);
}
t.animateChart();
} else {
RegionData[] rdArr = data.getRegionData(region);
renderer.getSeriesRendererAt(0).setColor(colors[viewMode]);
for (RegionData rd : rdArr) {
switch (viewMode) {
case VIEW_MODE_POPULATION:
dataSet.getSeriesAt(POPULATION).add(rd.year, rd.pop);
dataSet.getSeriesAt(0).setTitle("Population");
break;
case VIEW_MODE_DENSITY:
dataSet.getSeriesAt(0).setTitle("Density (People per square mile)");
dataSet.getSeriesAt(POPULATION).add(rd.year, rd.density);
break;
default:
throw new RuntimeException("Illegal view mode");
}
}
Log.p("Finished adding pop data");
}
}
/**
* Gets the buffer/cache for values. Values set in the buffer will be applied to the target
* dataset when the transition takes place.
*
* @return
*/
public XYMultipleSeriesDataset getBuffer() {
if (datasetCache == null) {
datasetCache = new XYMultipleSeriesDataset();
for (int i = 0; i < dataset.getSeriesCount(); i++) {
datasetCache.addSeries(new XYSeries(dataset.getSeriesAt(i).getTitle()));
}
seriesTransitions = new XYSeriesTransition[dataset.getSeries().length];
for (int i = 0; i < seriesTransitions.length; i++) {
seriesTransitions[i] = new XYSeriesTransition(getChart(), dataset.getSeriesAt(i));
seriesTransitions[i].setBuffer(datasetCache.getSeriesAt(i));
}
}
return datasetCache;
}
public DensityChart(PopulationData data) {
colors = new int[] {0x660000, 0x006600};
dataSet = new XYMultipleSeriesDataset();
XYSeries[] series = new XYSeries[] {new XYSeries("Population")};
renderer = new XYMultipleSeriesRenderer();
XYSeriesRenderer[] renderers =
new XYSeriesRenderer[] {
new XYSeriesRenderer(),
};
for (XYSeriesRenderer r : renderers) {
r.setLineWidth(2);
r.setColor(0xffff0000);
r.setFillBelowLine(true);
r.setFillBelowLineColor(0x33ff0000);
renderer.addSeriesRenderer(r);
}
renderer.setBackgroundColor(0xff000000);
renderer.setInitialRange(new double[] {1900, 2010, 0, 800000});
renderer.setXAxisMin(1910);
renderer.setMarginsColor(0xffffff);
renderer.setAxesColor(0x0);
renderer.setXLabelsColor(0x0);
renderer.setYLabelsColor(0, 0x0);
renderer.setShowGridX(true);
renderer.setGridColor(0xcccccc);
dataSet.addAllSeries(Arrays.asList(series));
LineChart lc =
new LineChart(dataSet, renderer) {
@Override
protected ClickableArea[] clickableAreasForPoints(
List<Float> points,
List<Double> values,
float yAxisValue,
int seriesIndex,
int startIndex) {
ClickableArea[] hotspots =
super.clickableAreasForPoints(points, values, yAxisValue, seriesIndex, startIndex);
for (ClickableArea area : hotspots) {
area.getRect().setY(0);
area.getRect().setHeight(10000);
}
return hotspots;
}
};
chart =
new ChartComponent(lc) {
@Override
protected void seriesPressed(SeriesSelection sel) {
super.seriesPressed(sel);
yearPressed((int) sel.getXValue());
}
};
this.setLayout(new BorderLayout());
this.addComponent(BorderLayout.CENTER, chart);
this.data = data;
}
