ChartDirector 7.0 (Java Edition)

Rotated Area Chart




This example demonstrates swapping the x and y axes to produce an rotated area chart in which the area goes from left to right (instead of bottom to top).

The x and y axes in the example are configured as follows:

The area in this chart is filled using a gradient color created with BaseChart.gradientColor.

Source Code Listing

[JSP Version] jspdemo/rotatedarea.jsp
<%@page import="ChartDirector.*, java.util.*" %> <% // The data for the area chart double[] data = {30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 89, 60, 55, 53, 35, 50, 66, 56, 48, 52, 65, 62}; // The labels for the area chart double[] labels = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24}; // Create a XYChart object of size 320 x 320 pixels XYChart c = new XYChart(320, 320); // Swap the x and y axis to become a rotated chart c.swapXY(); // Set the y axis on the top side (right + rotated = top) c.setYAxisOnRight(); // Reverse the x axis so it is pointing downwards c.xAxis().setReverse(); // Set the plotarea at (50, 50) and of size 200 x 200 pixels. Enable horizontal and vertical grids // by setting their colors to grey (0xc0c0c0). c.setPlotArea(50, 50, 250, 250).setGridColor(0xc0c0c0, 0xc0c0c0); // Add a line chart layer using the given data c.addAreaLayer(data, c.gradientColor(50, 0, 300, 0, 0xffffff, 0x0000ff)); // Set the labels on the x axis. Append "m" after the value to show the unit. c.xAxis().setLabels2(labels, "{value} m"); // Display 1 out of 3 labels. c.xAxis().setLabelStep(3); // Add a title to the x axis c.xAxis().setTitle("Depth"); // Add a title to the y axis c.yAxis().setTitle("Carbon Dioxide Concentration (ppm)"); // Output the chart WebChartViewer viewer = new WebChartViewer(request, "chart1"); viewer.setChart(c, Chart.SVG); // Include tool tip for the chart viewer.setImageMap(c.getHTMLImageMap("", "", "title='Carbon dioxide concentration at {xLabel}: {value} ppm'")); %> <!DOCTYPE html> <html> <head> <title>Rotated Area Chart</title> <!-- Include ChartDirector Javascript Library to support chart interactions --> <script type="text/javascript" src="cdjcv.js"></script> </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> Rotated Area Chart </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a> </div> <!-- ****** Here is the chart image ****** --> <%= viewer.renderHTML(response) %> </body> </html>