JFreeChart generate column

Abstract: JFreeChart generate column

</ Td> </ tr> <tr> <td height="35" valign="top" class="ArticleTeitle"> <table width="700" border="0"> <tr> <td width = " 421 "><%page contentType = "text / html; GBK charset ="%>
<% @ Page import = "java.awt.Color,
Java.awt.Font,
Org.jfree.chart.ChartFactory,
Org.jfree.chart.JFreeChart,
Org.jfree.chart.plot.PlotOrientation,
Org.jfree.chart.servlet.ServletUtilities,
Org.jfree.data.CategoryDataset,
Org.jfree.data.DatasetUtilities,
Org.jfree.chart.plot.CategoryPlot,
Org.jfree.chart.axis.CategoryAxis,
Org.jfree.chart.axis.ValueAxis,
Org.jfree.chart.renderer.BarRenderer3D,
Org.jfree.chart.labels.StandardCategoryItemLabelGenerator,
Org.jfree.chart.axis.AxisLocation "%>
<% </ Td> <td width="269"> </ td> </ tr> </ table>?
Double [] [] data = new double [] [] ((672, 766, 223, 540, 126), (325, 521, 210, 340, 106), (332, 256, 523, 240, 526)) ;
RowKeys String [] = ( "Apple", "pear", "grapes");
ColumnKeys String [] = ( "Beijing," "Shanghai", "Guangzhou", "Chengdu" and "Shenzhen");
CategoryDataset dataset = DatasetUtilities.createCategoryDataset (rowKeys, columnKeys, data);

JFreeChart chart = ChartFactory.createBarChart3D ( "fruit sales plans Statistics,"
Null,
Null,
Dataset,
PlotOrientation.VERTICAL,
True, false, false);
Chart.setBackgroundPaint (Color.WHITE);
CategoryPlot plot = chart.getCategoryPlot ();

CategoryAxis domainAxis = plot.getDomainAxis ();
DomainAxis.setVerticalCategoryLabels (false);
Plot.setDomainAxis (domainAxis);

ValueAxis rangeAxis = plot.getRangeAxis ();
/ / Item set the highest one from the top of the picture and
RangeAxis.setUpperMargin (0.15);
/ / Item set a minimum of the distance between the bottom of the picture
RangeAxis.setLowerMargin (0.15);
Plot.setRangeAxis (rangeAxis);

BarRenderer3D renderer = new BarRenderer3D ();
Renderer.setBaseOutlinePaint (Color.BLACK);
/ / Set the Wall color
Renderer.setWallPaint (Color.gray);
/ / Set up the representative of each fruit color -
Renderer.setSeriesPaint (0, new Color (0, 0, 255));
Renderer.setSeriesPaint (1, new Color (0, 100, 255));
Renderer.setSeriesPaint (2, Color.GREEN);
/ / Set up each region covered by the distance between the parallel columns
Renderer.setItemMargin (0.1);
/ / Show each column values, and modify the font attribute values
Renderer.setItemLabelGenerator (new StandardCategoryItemLabelGenerator ());
Renderer.setItemLabelsVisible (true);
Plot.setRenderer (renderer);

/ / Set-transparency
Plot.setForegroundAlpha (0.6f);
/ / Set up, sales of the display position
Plot.setDomainAxisLocation (AxisLocation.TOP_OR_RIGHT);
Plot.setRangeAxisLocation (AxisLocation.BOTTOM_OR_RIGHT);

String filename = ServletUtilities.saveChartAsPNG (chart, 500, 300, null, session);
String graphURL = request.getContextPath () + "/ servlet / DisplayChart? Filename =" + filename;
%>
"Width = 500 height = 300 border = 0 usemap ="#<%= filename%>">

</ Td> </ tr> <tr>