Java tutorial
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See the GNU Lesser General Public License for more details see http://opensource.org/licenses/lgpl-license.php. http://www.SOCR.ucla.edu http://wiki.stat.ucla.edu/socr It s Online, Therefore, It Exists! ****************************************************/ package edu.ucla.stat.SOCR.chart.demo; import java.awt.BasicStroke; import java.awt.Color; import java.awt.GradientPaint; import java.awt.Paint; import java.beans.PropertyChangeListener; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.BarRenderer; import org.jfree.chart.title.TextTitle; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.GradientPaintTransformType; import org.jfree.ui.RectangleInsets; import org.jfree.ui.StandardGradientPaintTransformer; import edu.ucla.stat.SOCR.chart.ChartGenerator_JTable; import edu.ucla.stat.SOCR.chart.SuperCategoryChart_Bar; import edu.ucla.stat.SOCR.chart.gui.SOCRCategorySeriesLabelGenerator; import edu.ucla.stat.SOCR.chart.gui.CustomBarRenderer; /** * A bar chart that uses a custom renderer to display different colors within a * single series. The colors use GradientPaint and the chart is animated. */ public class BarChartDemo9 extends SuperCategoryChart_Bar implements PropertyChangeListener { /** * sample code showing how to create a chart using ChartGenerator_JTable class */ public void doTest() { JFreeChart chart; ChartGenerator_JTable chartMaker = new ChartGenerator_JTable(); resetChart(); showMessageDialog(chartTitle + " doTest get called!"); int no_series = dataTable.getRowCount() - 1; int no_category = dataTable.getColumnCount() - 2; int[][] pairs = new int[no_category][2]; for (int i = 0; i < no_category; i++) { pairs[i][0] = i + 1; //column i store category i pairs[i][1] = 0; //column 0 stores series name } chart = chartMaker.getCategoryChart("Bar", chartTitle, "Category", "value", dataTable, no_category, pairs, ""); chartPanel = new ChartPanel(chart, false); setChart(); } /** * Creates a sample dataset. * * @return a sample dataset. */ protected CategoryDataset createDataset(boolean isDemo) { if (isDemo) { DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(410.0, "Network Traffic", "Monday"); dataset.addValue(680.0, "Network Traffic", "Tuesday"); dataset.addValue(530.0, "Network Traffic", "Wednesday"); dataset.addValue(570.0, "Network Traffic", "Thursday"); dataset.addValue(330.0, "Network Traffic", "Friday"); return dataset; } else return super.createDataset(false); } /** * Creates a sample chart. * * @param dataset the dataset. * * @return a sample chart. */ protected JFreeChart createChart(CategoryDataset dataset) { JFreeChart chart = ChartFactory.createBarChart(chartTitle, // chart title domainLabel, // domain axis label rangeLabel, // range axis label dataset, // data PlotOrientation.VERTICAL, // the plot orientation !legendPanelOn, // include legend true, false); TextTitle title = chart.getTitle(); title.setBorder(0, 0, 1, 0); title.setBackgroundPaint(new GradientPaint(0f, 0f, Color.red, 350f, 0f, Color.white, true)); title.setExpandToFitSpace(true); chart.setBackgroundPaint(new GradientPaint(0f, 0f, Color.yellow, 350f, 0f, Color.white, true)); // get a reference to the plot for further customisation... CategoryPlot plot = (CategoryPlot) chart.getPlot(); plot.setNoDataMessage("NO DATA!"); plot.setBackgroundPaint(null); plot.setInsets(new RectangleInsets(10, 5, 5, 5)); plot.setOutlinePaint(Color.black); plot.setRangeGridlinePaint(Color.gray); plot.setRangeGridlineStroke(new BasicStroke(1.0f)); Paint[] colors = createPaint(); CustomBarRenderer renderer = new CustomBarRenderer(colors); renderer.setGradientPaintTransformer( new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_HORIZONTAL)); plot.setRenderer(renderer); renderer.setLegendItemLabelGenerator(new SOCRCategorySeriesLabelGenerator()); // change the margin at the top of the range axis... NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); // rangeAxis.setRange(0.0, 800.0); rangeAxis.setTickMarkPaint(Color.black); setCategorySummary(dataset); return chart; } /** * Returns an array of paint objects that will be used for the bar colors. * * @return An array of paint objects. */ private static Paint[] createPaint() { Paint[] colors = new Paint[5]; colors[0] = new GradientPaint(0f, 0f, Color.white, 0f, 0f, Color.red); colors[1] = new GradientPaint(0f, 0f, Color.white, 0f, 0f, Color.green); colors[2] = new GradientPaint(0f, 0f, Color.white, 0f, 0f, Color.blue); colors[3] = new GradientPaint(0f, 0f, Color.white, 0f, 0f, Color.orange); colors[4] = new GradientPaint(0f, 0f, Color.white, 0f, 0f, Color.magenta); return colors; } }