ChartDirector 6.1 (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:

• Initially, the x-axis is horizontal from left to right at the bottom of the plot area, while the y-axis is vertical from bottom to top at the left side of the plot area.

• Swap the x and y axes using XYChart.swapXY. Now the x-axis is vertical from bottom to top at the left side of the chart, while the y-axis is horizontal from left to right at the bottom of the chart.

• Use XYChart.setYAxisOnRight to move the y-axis to the opposite side of the plot area, so that the y-axis is at the top of the plot area. (Note: the "right" word on setYAxisOnRight means the "right" side before "swapXY" rotation. After rotation, the right side will become to top side.)

• Use Axis.setReverse to reverse the direction of the x-axis, so that the x-axis is vertical from top to bottom (instead of from bottom to top).
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.*" %> <% // 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 String chart1URL = c.makeSession(request, "chart1"); // Include tool tip for the chart String imageMap1 = c.getHTMLImageMap("", "", "title='Carbon dioxide concentration at {xLabel}: {value} ppm'"); %>
Rotated Area Chart

View Source Code
<%=imageMap1%> ```

 ```import java.awt.*; import java.awt.event.*; import javax.swing.*; import ChartDirector.*; public class rotatedarea implements DemoModule { //Name of demo program public String toString() { return "Rotated Area Chart"; } //Number of charts produced in this demo public int getNoOfCharts() { return 1; } //Main code for creating charts public void createChart(ChartViewer viewer, int chartIndex) { // 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 viewer.setChart(c); //include tool tip for the chart viewer.setImageMap(c.getHTMLImageMap("clickable", "", "title='Carbon dioxide concentration at {xLabel}: {value} ppm'")); } //Allow this module to run as standalone program for easy testing public static void main(String[] args) { //Instantiate an instance of this demo module DemoModule demo = new rotatedarea(); //Create and set up the main window JFrame frame = new JFrame(demo.toString()); frame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) {System.exit(0);} }); frame.getContentPane().setBackground(Color.white); // Create the chart and put them in the content pane ChartViewer viewer = new ChartViewer(); demo.createChart(viewer, 0); frame.getContentPane().add(viewer); // Display the window frame.pack(); frame.setVisible(true); } }```