ChartDirector 6.0 (ColdFusion Edition)

Donut Chart




This example demonstrates a donut chart with ring shading effects. It also demonstrates brushed metal background, rounded frame, customized sector labels and using CDML and Parameter Substitution and Formatting to format legend text.

Source Code Listing

[File: cfdemo/donut.cfm]
<cfscript>

// ChartDirector for ColdFusion API Access Point
cd = CreateObject("java", "ChartDirector.CFChart");

// A utility to allow us to create arrays with data in one line of code
function Array() {
    var result = ArrayNew(1);
    var i = 0;
    for (i = 1; i LTE ArrayLen(arguments); i = i + 1)
        result[i] = arguments[i];
    return result;
}

// The data for the pie chart
data = Array(25, 18, 15, 12, 8, 30, 35);

// The labels for the pie chart
labels = Array("Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities", "Production");

// Create a PieChart object of size 600 x 320 pixels. Set background color to brushed silver, with a
// 2 pixel 3D border. Use rounded corners of 20 pixels radius.
c = cd.PieChart(600, 320, cd.brushedSilverColor(), cd.Transparent, 2);
c.setRoundedFrame("0xffffff", 20);

// Add a title using 18pt Times New Roman Bold Italic font. #Set top/bottom margins to 8 pixels.
title = c.addTitle("Donut Chart Demonstration", "Times New Roman Bold Italic", 18);
title.setMargin2(0, 0, 8, 8);

// Add a 2 pixels wide separator line just under the title
c.addLine(10, title.getHeight(), c.getWidth() - 11, title.getHeight(), cd.LineColor, 2);

// Set donut center at (160, 175), and outer/inner radii as 110/55 pixels
c.setDonutSize(160, 175, 110, 55);

// Set the pie data and the pie labels
c.setData(data, labels);

// Use ring shading effect for the sectors
c.setSectorStyle(cd.RingShading);

// Use the side label layout method, with the labels positioned 16 pixels from the donut bounding
// box
c.setLabelLayout(cd.SideLayout, 16);

// Show only the sector number as the sector label
c.setLabelFormat("{={sector}+1}");

// Set the sector label style to Arial Bold 10pt, with a dark grey (444444) border
c.setLabelStyle("Arial Bold", 10).setBackground(cd.Transparent, "0x444444");

// Add a legend box, with the center of the left side anchored at (330, 175), and using 10pt Arial
// Bold Italic font
b = c.addLegend(330, 175, True, "Arial Bold Italic", 10);
b.setAlignment(cd.Left);

// Set the legend box border to dark grey (444444), and with rounded conerns
b.setBackground(cd.Transparent, "0x444444");
b.setRoundedCorners();

// Set the legend box margin to 16 pixels, and the extra line spacing between the legend entries as
// 5 pixels
b.setMargin(16);
b.setKeySpacing(0, 5);

// Set the legend text to show the sector number, followed by a 120 pixels wide block showing the
// sector label, and a 40 pixels wide block showing the percentage
b.setText(
    "<*block,valign=top*>{={sector}+1}.<*advanceTo=22*><*block,width=120*>{label}<*/*>" &
    "<*block,width=40,halign=right*>{percent}<*/*>%");

// Output the chart
chart1URL = c.makeSession(GetPageContext(), "chart1", cd.JPG);

// Include tool tip for the chart
imageMap1 = c.getHTMLImageMap("", "", "title='{label}: US${value}K ({percent}%)'");

</cfscript>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Donut Chart
</div>
<hr style="border:solid 1px #000080" />
<cfoutput>
<div style="font-size:9pt; font-family:verdana; margin-bottom:1.5em">
    <a href='viewsource.cfm?file=#CGI.SCRIPT_NAME#'>View Source Code</a>
</div>
<img src="getchart.cfm?#chart1URL#" usemap="##map1" border="0" />
<map name="map1">#imageMap1#</map>
</cfoutput>
</body>
</html>