ChartDirector 7.0 (ASP/COM/VB Edition)

Simple Area Chart




This example demonstrates the basic steps in creating area charts.

Source Code Listing

[Web Version (in ASP)] aspdemo\simplearea.asp
<%@ language="vbscript" %> <% Set cd = CreateObject("ChartDirector.API") ' The data for the area chart data = Array(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 labels = Array("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 250 x 250 pixels Set c = cd.XYChart(250, 250) ' Set the plotarea at (30, 20) and of size 200 x 200 pixels Call c.setPlotArea(30, 20, 200, 200) ' Add an area chart layer using the given data Call c.addAreaLayer(data) ' Set the labels on the x axis. Call c.xAxis().setLabels(labels) ' Display 1 out of 3 labels on the x-axis. Call c.xAxis().setLabelStep(3) ' 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='Hour {xLabel}: Traffic {value} GBytes'") %> <!DOCTYPE html> <html> <head> <title>Simple Area 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;"> Simple Area 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\simplearea.cls
Public Sub createChart(viewer As Object, chartIndex As Integer) Dim cd As New ChartDirector.API ' The data for the area chart Dim data() data = Array(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 Dim labels() labels = Array("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 250 x 250 pixels Dim c As XYChart Set c = cd.XYChart(250, 250) ' Set the plotarea at (30, 20) and of size 200 x 200 pixels Call c.setPlotArea(30, 20, 200, 200) ' Add an area chart layer using the given data Call c.addAreaLayer(data) ' Set the labels on the x axis. Call c.xAxis().setLabels(labels) ' Display 1 out of 3 labels on the x-axis. Call c.xAxis().setLabelStep(3) ' Output the chart Set viewer.Picture = c.makePicture() 'include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", _ "title='Hour {xLabel}: Traffic {value} GBytes'") End Sub