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Operator Calculations

Demonstrates how operators can be used on series to manipulate chart data.

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<%@ Import Namespace="System.Drawing" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Page Language="C#" Description="dotnetCHARTING Component" %>
<script runat="server">

SeriesCollection getRandomData()
{
SeriesCollection SC = new SeriesCollection();
Random myR = new Random();
for(int a = 1; a < 2; a++)
{
Series s = new Series();
s.Name = "GNP";
for(int b = 1; b < 5; b++)
{
Element e = new Element();
e.Name = "Country " + b;
// Load a very large value.
e.YValue = myR.Next(50000000)+myR.Next(50000000)+myR.Next(50000000)+myR.Next(50000000);
e.YValue += myR.Next(50000000)+myR.Next(50000000)+myR.Next(50000000)+myR.Next(50000000);
e.YValue += myR.Next(500000000)+myR.Next(50000000)+myR.Next(50000000)+myR.Next(500000000);
e.YValue += myR.Next(500000000)+myR.Next(50000000)+myR.Next(50000000)+myR.Next(500000000);
s.Elements.Add(e);
}
SC.Add(s);
}
return SC;
}
void Page_Load(Object sender,EventArgs e)
{

Chart.Type = ChartType.Combo;//Horizontal;
Chart.TempDirectory = "temp";
Chart.YAxis.NumberPrecision =2;
Chart.Debug=true;
Chart.TitleBox.Position = TitleBoxPosition.FullWithLegend;

// Demonstrates how operators can be used on series to manipulate chart data.

// Scenario:
// We are charting dollar amounts some nation's GNP. These values are very large so we will scale
// the data down and show it in billions.

// First we get our data, if you would like to get the data from a database you need to use
// the data engine. See sample: features/dataEngine.aspx.
SeriesCollection sc = getRandomData();

// We can scale the data by multiplying the series.
for(int i = 0; i < sc.Count; i ++)
sc[i] = sc[i]*.000000001;

// Now we label the axis apropriately.
Chart.YAxis.Label.Text = "(GNP in Billions)";

// Add the random data.
Chart.SeriesCollection.Add(sc);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Operator Calculations</title>

</head>
<body>
<div style="text-align:center">
<dotnet:Chart id="Chart" runat="server" Width="568px" Height="344px" />
</div>
</body>
</html>

<%@ Import Namespace="System.Drawing" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Page Language="vb" Description="dotnetCHARTING Component" %>
<script runat="server">

Function getRandomData() As SeriesCollection
Dim SC As SeriesCollection = New SeriesCollection()
Dim myR As Random = New Random()
For a As Integer = 1 To 1
Dim s As Series = New Series()
s.Name = "GNP"
For b As Integer = 1 To 4
Dim e As Element = New Element()
e.Name = "Country " & b
' Load a very large value.
e.YValue = myR.Next(50000000)+myR.Next(50000000)+myR.Next(50000000)+myR.Next(50000000)
e.YValue += myR.Next(50000000)+myR.Next(50000000)+myR.Next(50000000)+myR.Next(50000000)
e.YValue += myR.Next(500000000)+myR.Next(50000000)+myR.Next(50000000)+myR.Next(500000000)
e.YValue += myR.Next(500000000)+myR.Next(50000000)+myR.Next(50000000)+myR.Next(500000000)
s.Elements.Add(e)
Next b
SC.Add(s)
Next a
Return SC
End Function
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

Chart.Type = ChartType.Combo 'Horizontal;
Chart.TempDirectory = "temp"
Chart.YAxis.NumberPrecision =2
Chart.Debug=True
Chart.TitleBox.Position = TitleBoxPosition.FullWithLegend

' Demonstrates how operators can be used on series to manipulate chart data.

' Scenario:
' We are charting dollar amounts some nation's GNP. These values are very large so we will scale
' the data down and show it in billions.

' First we get our data, if you would like to get the data from a database you need to use
' the data engine. See sample: features/dataEngine.aspx.
Dim sc As SeriesCollection = getRandomData()

' We can scale the data by multiplying the series.
For i As Integer = 0 To sc.Count - 1
sc(i) = sc(i)*.000000001
Next i

' Now we label the axis apropriately.
Chart.YAxis.Label.Text = "(GNP in Billions)"

' Add the random data.
Chart.SeriesCollection.Add(sc)
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Operator Calculations</title>

</head>
<body>
<div style="text-align:center">
<dotnet:Chart id="Chart" runat="server" Width="568px" Height="344px" />
</div>
</body>
</html>

Sample FilenameOperatorCalculations.aspx
VersionLegacy (Pre 3.0)
Uses DatabaseNo

JS Charting

Gallery

Operator Calculations