/** Replaces the chart's dataset and then checks that the new dataset is OK. */
public void testReplaceDataset() {
// create a dataset...
Number[][] data =
new Integer[][] {
{new Integer(-30), new Integer(-20)},
{new Integer(-10), new Integer(10)},
{new Integer(20), new Integer(30)}
};
CategoryDataset newData = DatasetUtilities.createCategoryDataset("S", "C", data);
LocalListener l = new LocalListener();
this.chart.addChangeListener(l);
CategoryPlot plot = (CategoryPlot) this.chart.getPlot();
plot.setDataset(newData);
assertEquals(true, l.flag);
ValueAxis axis = plot.getRangeAxis();
Range range = axis.getRange();
assertTrue(
"Expecting the lower bound of the range to be around -30: " + range.getLowerBound(),
range.getLowerBound() <= -30);
assertTrue(
"Expecting the upper bound of the range to be around 30: " + range.getUpperBound(),
range.getUpperBound() >= 30);
}
/**
* Create a bar chart with sample data in the range -3 to +3.
*
* @return The chart.
*/
private static JFreeChart createBarChart() {
Number[][] data =
new Integer[][] {
{new Integer(-3), new Integer(-2)},
{new Integer(-1), new Integer(1)},
{new Integer(2), new Integer(3)}
};
CategoryDataset dataset = DatasetUtilities.createCategoryDataset("S", "C", data);
return ChartFactory.createBarChart("Bar Chart", "Domain", "Range", dataset);
}
/**
* Displays a signal (using the JFreeChart package).
*
* @param useChart if set to true, the signal is displaied as a bar chart (this is used for
* histograms).
*/
public void display(boolean useChart) {
JFreeChart chart;
int nbSamples = getNbSamples();
if (useChart) {
String[] categories = new String[nbSamples];
for (int i = 0; i < nbSamples; i++) {
categories[i] = data.getX(i).toString();
}
String[] categoryNames = {"Histogram"};
double[][] categoryData = new double[1][nbSamples];
for (int i = 0; i < nbSamples; i++) {
categoryData[0][i] = data.getY(i).doubleValue();
}
CategoryDataset categoryDataset =
DatasetUtilities.createCategoryDataset(categoryNames, categories, categoryData);
chart =
ChartFactory.createBarChart(
"Histogram", // Title
"Data Value", // X axis label
"Number of Elements", // Y axis label
categoryDataset, // dataset
PlotOrientation.VERTICAL, // orientation
true, // legends
true, // tool tips
true);
} else {
XYDataset xyDataSet = new XYSeriesCollection(this.data);
chart =
ChartFactory.createXYLineChart(
"Example Dataset", // Title
"Abscissa", // X axis label
"Ordinate", // Y axis label
xyDataSet, // dataset
PlotOrientation.VERTICAL, // orientation
true, // legends
true, // tool tips
true); // urls
XYPlot plot = (XYPlot) chart.getPlot();
XYItemRenderer r = plot.getRenderer();
if (r instanceof XYLineAndShapeRenderer) {
XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) r;
renderer.setSeriesShapesVisible(0, true);
renderer.setSeriesShapesFilled(0, true);
}
}
ChartFrame frame = new ChartFrame("Frame Title", chart);
frame.setVisible(true);
frame.setSize(512, 512);
}
/**
* 创建一个数据集
*
* @return
*/
private CategoryDataset getCategoryDataset() {
DefaultKeyedValues keyedValues = new DefaultKeyedValues();
keyedValues.addValue("1月", 310);
keyedValues.addValue("2月", 489);
keyedValues.addValue("3月", 512);
keyedValues.addValue("4月", 589);
keyedValues.addValue("5月", 359);
keyedValues.addValue("6月", 402);
CategoryDataset dataset = DatasetUtilities.createCategoryDataset("java book", keyedValues);
return dataset;
}
/**
* Creates a sample dataset.
*
* @return A sample dataset.
*/
private CategoryDataset createDataset() {
final double[][] data =
new double[][] {
{3.0, 4.0, 3.0, 5.0},
{5.0, 7.0, 6.0, 8.0},
{5.0, 7.0, 3.0, 8.0},
{1.0, 2.0, 3.0, 4.0},
{2.0, 3.0, 2.0, 3.0}
};
final CategoryDataset dataset =
DatasetUtilities.createCategoryDataset("Region ", "Sales/Q", data);
return dataset;
}
/**
* 创建一个数据集
*
* @return
*/
private CategoryDataset getCategoryDataset() {
DefaultKeyedValues keyedValues = new DefaultKeyedValues();
keyedValues.addValue("1", 310);
keyedValues.addValue("2", 489);
keyedValues.addValue("3", 512);
keyedValues.addValue("4", 589);
keyedValues.addValue("5", 359);
keyedValues.addValue("6", 402);
// 排序
keyedValues.sortByValues(SortOrder.ASCENDING);
CategoryDataset dataset = DatasetUtilities.createCategoryDataset("JAVA图书", keyedValues);
return dataset;
}
/**
* Create a bar chart with sample data in the range -3 to +3.
*
* @return The chart.
*/
private static JFreeChart createWaterfallChart() {
// create a dataset...
Number[][] data =
new Integer[][] {
{new Integer(-3), new Integer(-2)},
{new Integer(-1), new Integer(1)},
{new Integer(2), new Integer(3)}
};
CategoryDataset dataset = DatasetUtilities.createCategoryDataset("S", "C", data);
// create the chart...
return ChartFactory.createWaterfallChart(
"Waterfall Chart",
"Domain",
"Range",
dataset,
PlotOrientation.HORIZONTAL,
true, // include legend
true,
true);
}
/**
* Starting point for the demo.
*
* @param args ignored.
*/
public static void main(final String[] args) {
// create a chart
final double[][] data =
new double[][] {
{56.0, -12.0, 34.0, 76.0, 56.0, 100.0, 67.0, 45.0},
{37.0, 45.0, 67.0, 25.0, 34.0, 34.0, 100.0, 53.0},
{43.0, 54.0, 34.0, 34.0, 87.0, 64.0, 73.0, 12.0}
};
final CategoryDataset dataset =
DatasetUtilities.createCategoryDataset("Series ", "Type ", data);
JFreeChart chart = null;
final boolean drilldown = true;
if (drilldown) {
final CategoryAxis categoryAxis = new CategoryAxis("Category");
final ValueAxis valueAxis = new NumberAxis("Value");
final BarRenderer renderer = new BarRenderer();
renderer.setToolTipGenerator(new StandardCategoryToolTipGenerator());
renderer.setItemURLGenerator(new StandardCategoryURLGenerator("bar_chart_detail.jsp"));
final CategoryPlot plot = new CategoryPlot(dataset, categoryAxis, valueAxis, renderer);
plot.setOrientation(PlotOrientation.VERTICAL);
chart = new JFreeChart("Bar Chart", JFreeChart.DEFAULT_TITLE_FONT, plot, true);
} else {
chart =
ChartFactory.createBarChart(
"Vertical Bar Chart", // chart title
"Category", // domain axis label
"Value", // range axis label
dataset, // data
PlotOrientation.VERTICAL,
true, // include legend
true,
false);
}
chart.setBackgroundPaint(java.awt.Color.white);
// ****************************************************************************
// * JFREECHART DEVELOPER GUIDE *
// * The JFreeChart Developer Guide, written by David Gilbert, is available *
// * to purchase from Object Refinery Limited: *
// * *
// * http://www.object-refinery.com/jfreechart/guide.html *
// * *
// * Sales are used to provide funding for the JFreeChart project - please *
// * support us so that we can continue developing free software. *
// ****************************************************************************
// save it to an image
try {
final ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
final File file1 = new File("barchart100.png");
ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info);
// write an HTML page incorporating the image with an image map
final File file2 = new File("barchart100.html");
final OutputStream out = new BufferedOutputStream(new FileOutputStream(file2));
final PrintWriter writer = new PrintWriter(out);
writer.println("<HTML>");
writer.println("<HEAD><TITLE>JFreeChart Image Map Demo</TITLE></HEAD>");
writer.println("<BODY>");
ChartUtilities.writeImageMap(writer, "chart", info, true);
writer.println(
"<IMG SRC=\"barchart100.png\" "
+ "WIDTH=\"600\" HEIGHT=\"400\" BORDER=\"0\" USEMAP=\"#chart\">");
writer.println("</BODY>");
writer.println("</HTML>");
writer.close();
} catch (IOException e) {
System.out.println(e.toString());
}
}
public static String getBarSeries(Map dataSource, String objectName, HttpSession session)
throws Exception {
DefaultKeyedValues barValues = new DefaultKeyedValues();
DefaultKeyedValues seriesValues = new DefaultKeyedValues();
Element chartObject =
XMLHandler.getElementByAttribute(getChartObjectList(), "name", objectName);
Element barField = chartObject.getChild("BarFields").getChild("Field");
Element seriesField = chartObject.getChild("SeriesFields").getChild("Field");
for (int i = 0; i < dataSource.size(); i++) {
Map rec = (Map) dataSource.get("ROW" + i);
barValues.addValue(
DataFilter.show(rec, chartObject.getChildText("ColumnLabel")),
Double.parseDouble(rec.get(barField.getAttributeValue("name")).toString()));
seriesValues.addValue(
DataFilter.show(rec, chartObject.getChildText("ColumnLabel")),
Double.parseDouble(rec.get(seriesField.getAttributeValue("name")).toString()));
}
CategoryDataset dataset =
DatasetUtilities.createCategoryDataset(barField.getAttributeValue("label"), barValues);
PlotOrientation plotOrientation =
chartObject.getAttributeValue("plotOrientation").equalsIgnoreCase("VERTICAL")
? PlotOrientation.VERTICAL
: PlotOrientation.HORIZONTAL;
JFreeChart chart =
ChartFactory.createBarChart3D(
chartObject.getAttributeValue("title"),
chartObject.getAttributeValue("categoryAxisLabel"),
chartObject.getAttributeValue("valueAxisLabel"),
dataset,
plotOrientation,
chartObject.getAttribute("showLegend").getBooleanValue(),
chartObject.getAttribute("showToolTips").getBooleanValue(),
chartObject.getAttribute("urls").getBooleanValue());
CategoryPlot categoryplot = chart.getCategoryPlot();
LineRenderer3D lineRenderer = new LineRenderer3D();
CategoryDataset datasetSeries =
DatasetUtilities.createCategoryDataset(
seriesField.getAttributeValue("label"), seriesValues);
categoryplot.setDataset(1, datasetSeries);
categoryplot.setRangeAxis(1, new NumberAxis3D(seriesField.getAttributeValue("label")));
categoryplot.setRenderer(1, lineRenderer);
categoryplot.mapDatasetToRangeAxis(1, 1);
BarRenderer3D barrenderer = (BarRenderer3D) categoryplot.getRenderer();
barrenderer.setLabelGenerator(new StandardCategoryLabelGenerator());
barrenderer.setItemLabelsVisible(true);
barrenderer.setPositiveItemLabelPosition(
new ItemLabelPosition(ItemLabelAnchor.OUTSIDE1, TextAnchor.BASELINE_CENTER));
// lineRenderer.setLabelGenerator(new StandardCategoryLabelGenerator());
// lineRenderer.setItemLabelsVisible(true);
// lineRenderer.setPositiveItemLabelPosition(
// new ItemLabelPosition(ItemLabelAnchor.OUTSIDE10, TextAnchor.CENTER));
float alpha = 0.7F;
if (chartObject.getAttribute("alpha") != null) {
alpha = chartObject.getAttribute("alpha").getFloatValue();
}
categoryplot.setForegroundAlpha(alpha);
int width, height;
if (chartObject.getAttributeValue("width").equalsIgnoreCase("auto")) {
width = (50 * dataSource.size()) + 100;
} else {
width = Integer.parseInt(chartObject.getAttributeValue("width"));
}
if (chartObject.getAttributeValue("height").equalsIgnoreCase("auto")) {
height = (50 * dataSource.size()) + 100;
} else {
height = Integer.parseInt(chartObject.getAttributeValue("height"));
}
return ServletUtilities.saveChartAsPNG(chart, width, height, session);
}
public static String getSimpleBarChart(Map dataSource, String objectName, HttpSession session)
throws Throwable {
Element chartObject =
XMLHandler.getElementByAttribute(getChartObjectList(), "name", objectName);
List invokeFields = chartObject.getChild("InvokeFields").getChildren("Field");
double[][] data = new double[invokeFields.size()][dataSource.size()];
String[] rowKeys = new String[invokeFields.size()];
String[] columnKeys = new String[dataSource.size()];
String columnLabel = chartObject.getChildText("ColumnLabel");
for (int i = 0; i < dataSource.size(); i++) {
Map rec = (Map) dataSource.get("ROW" + i);
columnKeys[i] = DataFilter.show(rec, columnLabel);
for (int j = 0; j < invokeFields.size(); j++) {
data[j][i] =
Double.parseDouble(
rec.get(((Element) invokeFields.get(j)).getAttributeValue("name")).toString());
}
}
for (int i = 0; i < invokeFields.size(); i++) {
rowKeys[i] = ((Element) invokeFields.get(i)).getAttributeValue("label");
}
CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys, columnKeys, data);
PlotOrientation plotOrientation =
chartObject.getAttributeValue("plotOrientation").equalsIgnoreCase("VERTICAL")
? PlotOrientation.VERTICAL
: PlotOrientation.HORIZONTAL;
JFreeChart chart =
ChartFactory.createBarChart3D(
chartObject.getAttributeValue("title"),
chartObject.getAttributeValue("categoryAxisLabel"),
chartObject.getAttributeValue("valueAxisLabel"),
dataset,
plotOrientation,
chartObject.getAttribute("showLegend").getBooleanValue(),
chartObject.getAttribute("showToolTips").getBooleanValue(),
chartObject.getAttribute("urls").getBooleanValue());
CategoryPlot C3dplot = (CategoryPlot) chart.getPlot();
if (chartObject.getAttribute("alpha") != null) {
C3dplot.setForegroundAlpha(chartObject.getAttribute("alpha").getFloatValue());
}
BarRenderer3D barrenderer = (BarRenderer3D) C3dplot.getRenderer();
barrenderer.setLabelGenerator(new StandardCategoryLabelGenerator());
barrenderer.setItemLabelsVisible(true);
barrenderer.setPositiveItemLabelPosition(
new ItemLabelPosition(ItemLabelAnchor.OUTSIDE1, TextAnchor.BASELINE_CENTER));
int width, height;
if (chartObject.getAttributeValue("width").equalsIgnoreCase("auto")) {
width = (50 * dataSource.size()) * invokeFields.size() + 100;
} else {
width = Integer.parseInt(chartObject.getAttributeValue("width"));
}
if (chartObject.getAttributeValue("height").equalsIgnoreCase("auto")) {
height = (50 * dataSource.size()) * invokeFields.size() + 100;
} else {
height = Integer.parseInt(chartObject.getAttributeValue("height"));
}
return ServletUtilities.saveChartAsPNG(chart, width, height, session);
}