ChartDirector 6.1 (Java Edition)

Bars with Marks




This example demonstrates combine a bar layer with a box-whisker layer to create bars with marks. It also demonstrates gradient background color, rounded frame, soft drop shadow, and automatic resizing of the plot area to fit the chart.

Source Code Listing

[JSP Version] jspdemo/markbar.jsp
<%@page import="ChartDirector.*" %>
<%
// The data for the bars and the marks
double[] barData = {100, 125, 245, 147, 67, 96, 160, 145, 97, 167, 220, 125};
double[] markData = {85, 156, 220, 120, 80, 110, 140, 130, 111, 180, 175, 100};

// The labels for the bar chart
String[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov",
    "Dec"};

// Create a XYChart object of size 480 x 360 pixels. Use a vertical gradient color from pale blue
// (e8f0f8) to sky blue (aaccff) spanning half the chart height as background. Set border to blue
// (88aaee). Use rounded corners. Enable soft drop shadow.
XYChart c = new XYChart(480, 360);
c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight() / 2, 0xe8f0f8, 0xaaccff), 0x88aaee);
c.setRoundedFrame();
c.setDropShadow();

// Add a title to the chart using 15 points Arial Italic font. Set top/bottom margins to 12 pixels.
TextBox title = c.addTitle("Bars with Marks Demonstration", "Arial Italic", 15);
title.setMargin2(0, 0, 12, 12);

// Tentatively set the plotarea to 50 pixels from the left edge to allow for the y-axis, and to just
// under the title. Set the width to 65 pixels less than the chart width, and the height to reserve
// 90 pixels at the bottom for the x-axis and the legend box. Use pale blue (e8f0f8) background,
// transparent border, and grey (888888) dotted horizontal grid lines.
c.setPlotArea(50, title.getHeight(), c.getWidth() - 65, c.getHeight() - title.getHeight() - 90,
    0xe8f0f8, -1, Chart.Transparent, c.dashLineColor(0x888888, Chart.DotLine));

// Add a legend box where the bottom-center is anchored to the 15 pixels above the bottom-center of
// the chart. Use horizontal layout and 8 points Arial font.
LegendBox legendBox = c.addLegend(c.getWidth() / 2, c.getHeight() - 15, false, "Arial", 8);
legendBox.setAlignment(Chart.BottomCenter);

// Set the legend box background and border to pale blue (e8f0f8) and bluish grey (445566)
legendBox.setBackground(0xe8f0f8, 0x445566);

// Use rounded corners of 5 pixel radius for the legend box
legendBox.setRoundedCorners(5);

// Use line style legend key
legendBox.setLineStyleKey();

// Set axes to transparent
c.xAxis().setColors(Chart.Transparent);
c.yAxis().setColors(Chart.Transparent);

// Set the labels on the x axis
c.xAxis().setLabels(labels);

// Add a box-whisker layer with just the middle mark visible for the marks. Use red (ff0000) color
// for the mark, with a line width of 2 pixels and 10% horizontal gap
BoxWhiskerLayer markLayer = c.addBoxWhiskerLayer(null, null, null, null, markData, -1, 0xff0000);
markLayer.setLineWidth(2);
markLayer.setDataGap(0.1);

// Add the legend key for the mark line
legendBox.addKey("Target", 0xff0000, 2);

// Tool tip for the mark layer
markLayer.setHTMLImageMap("", "", "title='Target at {xLabel}: {med}'");

// Add a blue (0066cc) bar layer using the given data.
BarLayer barLayer = c.addBarLayer(barData, 0x0066cc, "Actual");

// Use soft lighting effect for the bars with light direction from left.
barLayer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));

// Tool tip for the bar layer
barLayer.setHTMLImageMap("", "", "title='{dataSetName} at {xLabel}: {value}'");

// Adjust the plot area size, such that the bounding box (inclusive of axes) is 10 pixels from the
// left edge, just below the title, 15 pixels from the right edge, and 10 pixels above the legend
// box.
c.packPlotArea(10, title.getHeight(), c.getWidth() - 15, c.layoutLegend().getTopY() - 10);

// Output the chart
String chart1URL = c.makeSession(request, "chart1");

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Bars with Marks
</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)%>'
    usemap="#map1" border="0">
<map name="map1"><%=imageMap1%></map>
</body>
</html>

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

public class markbar implements DemoModule
{
    //Name of demo program
    public String toString() { return "Bars with Marks"; }

    //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 bars and the marks
        double[] barData = {100, 125, 245, 147, 67, 96, 160, 145, 97, 167, 220, 125};
        double[] markData = {85, 156, 220, 120, 80, 110, 140, 130, 111, 180, 175, 100};

        // The labels for the bar chart
        String[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct",
            "Nov", "Dec"};

        // Create a XYChart object of size 480 x 360 pixels. Use a vertical gradient color from pale
        // blue (e8f0f8) to sky blue (aaccff) spanning half the chart height as background. Set
        // border to blue (88aaee). Use rounded corners. Enable soft drop shadow.
        XYChart c = new XYChart(480, 360);
        c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight() / 2, 0xe8f0f8, 0xaaccff),
            0x88aaee);
        c.setRoundedFrame();
        c.setDropShadow();

        // Add a title to the chart using 15 points Arial Italic font. Set top/bottom margins to 12
        // pixels.
        TextBox title = c.addTitle("Bars with Marks Demonstration", "Arial Italic", 15);
        title.setMargin2(0, 0, 12, 12);

        // Tentatively set the plotarea to 50 pixels from the left edge to allow for the y-axis, and
        // to just under the title. Set the width to 65 pixels less than the chart width, and the
        // height to reserve 90 pixels at the bottom for the x-axis and the legend box. Use pale
        // blue (e8f0f8) background, transparent border, and grey (888888) dotted horizontal grid
        // lines.
        c.setPlotArea(50, title.getHeight(), c.getWidth() - 65, c.getHeight() - title.getHeight() -
            90, 0xe8f0f8, -1, Chart.Transparent, c.dashLineColor(0x888888, Chart.DotLine));

        // Add a legend box where the bottom-center is anchored to the 15 pixels above the
        // bottom-center of the chart. Use horizontal layout and 8 points Arial font.
        LegendBox legendBox = c.addLegend(c.getWidth() / 2, c.getHeight() - 15, false, "Arial", 8);
        legendBox.setAlignment(Chart.BottomCenter);

        // Set the legend box background and border to pale blue (e8f0f8) and bluish grey (445566)
        legendBox.setBackground(0xe8f0f8, 0x445566);

        // Use rounded corners of 5 pixel radius for the legend box
        legendBox.setRoundedCorners(5);

        // Use line style legend key
        legendBox.setLineStyleKey();

        // Set axes to transparent
        c.xAxis().setColors(Chart.Transparent);
        c.yAxis().setColors(Chart.Transparent);

        // Set the labels on the x axis
        c.xAxis().setLabels(labels);

        // Add a box-whisker layer with just the middle mark visible for the marks. Use red (ff0000)
        // color for the mark, with a line width of 2 pixels and 10% horizontal gap
        BoxWhiskerLayer markLayer = c.addBoxWhiskerLayer(null, null, null, null, markData, -1,
            0xff0000);
        markLayer.setLineWidth(2);
        markLayer.setDataGap(0.1);

        // Add the legend key for the mark line
        legendBox.addKey("Target", 0xff0000, 2);

        // Tool tip for the mark layer
        markLayer.setHTMLImageMap("", "", "title='Target at {xLabel}: {med}'");

        // Add a blue (0066cc) bar layer using the given data.
        BarLayer barLayer = c.addBarLayer(barData, 0x0066cc, "Actual");

        // Use soft lighting effect for the bars with light direction from left.
        barLayer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));

        // Tool tip for the bar layer
        barLayer.setHTMLImageMap("", "", "title='{dataSetName} at {xLabel}: {value}'");

        // Adjust the plot area size, such that the bounding box (inclusive of axes) is 10 pixels
        // from the left edge, just below the title, 15 pixels from the right edge, and 10 pixels
        // above the legend box.
        c.packPlotArea(10, title.getHeight(), c.getWidth() - 15, c.layoutLegend().getTopY() - 10);

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

        // Include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable"));
    }

    //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 markbar();

        //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);
    }
}