ChartDirector 7.0 (ASP/COM/VB 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

[Web Version (in ASP)] aspdemo\donut.asp
<%@ language="vbscript" %> <% Set cd = CreateObject("ChartDirector.API") ' 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. Set c = cd.PieChart(600, 320, cd.brushedSilverColor(), cd.Transparent, 2) Call c.setRoundedFrame(&Hffffff, 20) ' Add a title using 18pt Times New Roman Bold Italic font. #Set top/bottom margins to 8 pixels. Set title = c.addTitle("Donut Chart Demonstration", "Times New Roman Bold Italic", 18) Call title.setMargin2(0, 0, 8, 8) ' Add a 2 pixels wide separator line just under the title Call 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 Call c.setDonutSize(160, 175, 110, 55) ' Set the pie data and the pie labels Call c.setData(data, labels) ' Use ring shading effect for the sectors Call c.setSectorStyle(cd.RingShading) ' Use the side label layout method, with the labels positioned 16 pixels from the donut bounding box Call c.setLabelLayout(cd.SideLayout, 16) ' Show only the sector number as the sector label Call c.setLabelFormat("{={sector}+1}") ' Set the sector label style to Arial Bold 10pt, with a dark grey (444444) border Call c.setLabelStyle("Arial Bold", 10).setBackground(cd.Transparent, &H444444) ' Add a legend box, with the center of the left side anchored at (330, 175), and using 10pt Arial ' Bold Italic font Set b = c.addLegend(330, 175, True, "Arial Bold Italic", 10) Call b.setAlignment(cd.Left) ' Set the legend box border to dark grey (444444), and with rounded conerns Call b.setBackground(cd.Transparent, &H444444) Call b.setRoundedCorners() ' Set the legend box margin to 16 pixels, and the extra line spacing between the legend entries as 5 ' pixels Call b.setMargin(16) Call 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 Call b.setText( _ "<*block,valign=top*>{={sector}+1}.<*advanceTo=22*><*block,width=120*>{label}<*/*>" & _ "<*block,width=40,halign=right*>{percent}<*/*>%") ' Output the chart Set viewer = cd.WebChartViewer(Request, "chart1") Call viewer.setChart(c, cd.SVG) ' Include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("", "", "title='{label}: US${value}K ({percent}%)'") %> <!DOCTYPE html> <html> <head> <title>Donut 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;"> Donut Chart </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.asp?file=<%= Request("SCRIPT_NAME") %>">View Chart Source Code</a> </div> <!-- ****** Here is the chart image ****** --> <%= viewer.renderHTML() %> </body> </html>

[Windows Version (in Visual Basic)] vbdemo\donut.cls
Public Sub createChart(viewer As Object, chartIndex As Integer) Dim cd As New ChartDirector.API ' The data for the pie chart Dim data() data = Array(25, 18, 15, 12, 8, 30, 35) ' The labels for the pie chart Dim labels() 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. Dim c As PieChart Set c = cd.PieChart(600, 320, cd.brushedSilverColor(), cd.Transparent, 2) Call c.setRoundedFrame(&Hffffff, 20) ' Add a title using 18pt Times New Roman Bold Italic font. #Set top/bottom margins to 8 pixels. Dim title As ChartDirector.TextBox Set title = c.addTitle("Donut Chart Demonstration", "timesbi.ttf", 18) Call title.setMargin2(0, 0, 8, 8) ' Add a 2 pixels wide separator line just under the title Call 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 Call c.setDonutSize(160, 175, 110, 55) ' Set the pie data and the pie labels Call c.setData(data, labels) ' Use ring shading effect for the sectors Call c.setSectorStyle(cd.RingShading) ' Use the side label layout method, with the labels positioned 16 pixels from the donut bounding ' box Call c.setLabelLayout(cd.SideLayout, 16) ' Show only the sector number as the sector label Call c.setLabelFormat("{={sector}+1}") ' Set the sector label style to Arial Bold 10pt, with a dark grey (444444) border Call c.setLabelStyle("arialbd.ttf", 10).setBackground(cd.Transparent, &H444444) ' Add a legend box, with the center of the left side anchored at (330, 175), and using 10pt ' Arial Bold Italic font Dim b As LegendBox Set b = c.addLegend(330, 175, True, "arialbi.ttf", 10) Call b.setAlignment(cd.Left) ' Set the legend box border to dark grey (444444), and with rounded conerns Call b.setBackground(cd.Transparent, &H444444) Call b.setRoundedCorners() ' Set the legend box margin to 16 pixels, and the extra line spacing between the legend entries ' as 5 pixels Call b.setMargin(16) Call 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 Call b.setText( _ "<*block,valign=top*>{={sector}+1}.<*advanceTo=22*><*block,width=120*>{label}<*/*>" & _ "<*block,width=40,halign=right*>{percent}<*/*>%") ' Output the chart Set viewer.Picture = c.makePicture() 'include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", _ "title='{label}: US${value}K ({percent}%)'") End Sub