ChartDirector 6.1 (Java Edition)

Surface Chart (3)




This example demonstrates using deep perspective. It also demonstrates surface grid lines of different line styles.

Source Code Listing

[JSP Version] jspdemo/surface3.jsp
<%@page import="ChartDirector.*" %>
<%
// The x and y coordinates of the grid
double[] dataX = {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
double[] dataY = {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

// The values at the grid points. In this example, we will compute the values using the formula z =
// Sin(x * x / 128 - y * y / 256 + 3) * Cos(x / 4 + 1 - Exp(y / 8))
double[] dataZ = new double[dataX.length * dataY.length];
for (int yIndex = 0; yIndex < dataY.length; ++yIndex) {
    double y = dataY[yIndex];
    for (int xIndex = 0; xIndex < dataX.length; ++xIndex) {
        double x = dataX[xIndex];
        dataZ[yIndex * dataX.length + xIndex] = Math.sin(x * x / 128.0 - y * y / 256.0 + 3) *
            Math.cos(x / 4.0 + 1 - Math.exp(y / 8.0));
    }
}

// Create a SurfaceChart object of size 750 x 600 pixels
SurfaceChart c = new SurfaceChart(750, 600);

// Add a title to the chart using 20 points Times New Roman Italic font
c.addTitle("Surface Energy Density       ", "Times New Roman Italic", 20);

// Set the center of the plot region at (380, 260), and set width x depth x height to 360 x 360 x
// 270 pixels
c.setPlotRegion(380, 260, 360, 360, 270);

// Set the elevation and rotation angles to 30 and 210 degrees
c.setViewAngle(30, 210);

// Set the perspective level to 60
c.setPerspective(60);

// Set the data to use to plot the chart
c.setData(dataX, dataY, dataZ);

// Spline interpolate data to a 80 x 80 grid for a smooth surface
c.setInterpolation(80, 80);

// Use semi-transparent black (c0000000) for x and y major surface grid lines. Use dotted style for
// x and y minor surface grid lines.
int majorGridColor = 0xc0000000;
int minorGridColor = c.dashLineColor(majorGridColor, Chart.DotLine);
c.setSurfaceAxisGrid(majorGridColor, majorGridColor, minorGridColor, minorGridColor);

// Set contour lines to semi-transparent white (80ffffff)
c.setContourColor(0x80ffffff);

// Add a color axis (the legend) in which the left center is anchored at (665, 280). Set the length
// to 200 pixels and the labels on the right side.
c.setColorAxis(665, 280, Chart.Left, 200, Chart.Right);

// Set the x, y and z axis titles using 12 points Arial Bold font
c.xAxis().setTitle("X Title\nPlaceholder", "Arial Bold", 12);
c.yAxis().setTitle("Y Title\nPlaceholder", "Arial Bold", 12);
c.zAxis().setTitle("Z Title Placeholder", "Arial Bold", 12);

// Output the chart
String chart1URL = c.makeSession(request, "chart1", Chart.JPG);
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Surface Chart (3)
</div>
<hr color="#000080">
<div style="font-size:10pt; font-family:verdana; margin-bottom:1.5em">
    <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a>
</div>
<img src='<%=response.encodeURL("getchart.jsp?"+chart1URL)%>'>
</body>
</html>

[Java Version] javademo/surface3.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class surface3 implements DemoModule
{
    //Name of demo program
    public String toString() { return "Surface Chart (3)"; }

    //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 x and y coordinates of the grid
        double[] dataX = {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
            ;
        double[] dataY = {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
            ;

        // The values at the grid points. In this example, we will compute the values using the
        // formula z = Sin(x * x / 128 - y * y / 256 + 3) * Cos(x / 4 + 1 - Exp(y / 8))
        double[] dataZ = new double[dataX.length * dataY.length];
        for (int yIndex = 0; yIndex < dataY.length; ++yIndex) {
            double y = dataY[yIndex];
            for (int xIndex = 0; xIndex < dataX.length; ++xIndex) {
                double x = dataX[xIndex];
                dataZ[yIndex * dataX.length + xIndex] = Math.sin(x * x / 128.0 - y * y / 256.0 + 3)
                     * Math.cos(x / 4.0 + 1 - Math.exp(y / 8.0));
            }
        }

        // Create a SurfaceChart object of size 750 x 600 pixels
        SurfaceChart c = new SurfaceChart(750, 600);

        // Add a title to the chart using 20 points Times New Roman Italic font
        c.addTitle("Surface Energy Density       ", "Times New Roman Italic", 20);

        // Set the center of the plot region at (380, 260), and set width x depth x height to 360 x
        // 360 x 270 pixels
        c.setPlotRegion(380, 260, 360, 360, 270);

        // Set the elevation and rotation angles to 30 and 210 degrees
        c.setViewAngle(30, 210);

        // Set the perspective level to 60
        c.setPerspective(60);

        // Set the data to use to plot the chart
        c.setData(dataX, dataY, dataZ);

        // Spline interpolate data to a 80 x 80 grid for a smooth surface
        c.setInterpolation(80, 80);

        // Use semi-transparent black (c0000000) for x and y major surface grid lines. Use dotted
        // style for x and y minor surface grid lines.
        int majorGridColor = 0xc0000000;
        int minorGridColor = c.dashLineColor(majorGridColor, Chart.DotLine);
        c.setSurfaceAxisGrid(majorGridColor, majorGridColor, minorGridColor, minorGridColor);

        // Set contour lines to semi-transparent white (80ffffff)
        c.setContourColor(0x80ffffff);

        // Add a color axis (the legend) in which the left center is anchored at (665, 280). Set the
        // length to 200 pixels and the labels on the right side.
        c.setColorAxis(665, 280, Chart.Left, 200, Chart.Right);

        // Set the x, y and z axis titles using 12 points Arial Bold font
        c.xAxis().setTitle("X Title\nPlaceholder", "Arial Bold", 12);
        c.yAxis().setTitle("Y Title\nPlaceholder", "Arial Bold", 12);
        c.zAxis().setTitle("Z Title Placeholder", "Arial Bold", 12);

        // Output the chart
        viewer.setChart(c);
    }

    //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 surface3();

        //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);
    }
}