📄 trendlinescatter.aspx
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<%@ Page Language="C#" debug="true" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>
<HTML>
<HEAD>
<TITLE>Trend Line Scatter</TITLE>
<script runat="server">
void Page_Load(Object sender,EventArgs e)
{
Chart.Type = ChartType.Scatter;
Chart.Width = 750;
Chart.Height = 300;
Chart.TempDirectory = "temp";
Chart.Debug = true;
Chart.DefaultSeries.Line.Width = 2;
Chart.DefaultSeries.DefaultElement.Transparency = 45;
Chart.LegendBox.Position = LegendBoxPosition.BottomMiddle;
Chart.DefaultSeries.DefaultElement.Marker.Type = ElementMarkerType.None;
Chart.DefaultSeries.Type = SeriesType.Line;
// This sample will demonstrate how to derive trend lines from your scatter data.
// 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. Or the dataEngine tutorial in the help file.
SeriesCollection mySC = getRandomData();
// Get a trend line from series 1. Because only the SeriesCollection Calculate method returns a series a
// SeriesCollection is instantiated and the method is used.
Series trend1 = (new SeriesCollection(mySC[0])).Calculate("Series 1 Trend",Calculation.TrendLineLinearScatter);
// Set a line dash style.
trend1.Line.DashStyle = DashStyle.Dash;
//We'll give this line a green color so it looks like it relates to the yellow bars of series 1
trend1.DefaultElement.Color = Color.DarkGreen;//Color.FromArgb(25,225,25);
// Trend line from Series 1 & 2
// This time we want to predict what will happen 10 steps from now so we pass an extra parameter to the
// calculate method.
Series trend2 = mySC.Calculate("Series 1 & 2 Trend + (10 elements)",Calculation.TrendLineLinearScatter,10);
// Set a line dash style.
trend2.Line.DashStyle = DashStyle.Dash;
// Give this trend line a blue color.
trend2.DefaultElement.Color = Color.FromArgb(0,156,255);
// Add the trend lines to the collection.
mySC.Add(trend1);
mySC.Add(trend2);
// Add the random data.
Chart.SeriesCollection.Add(mySC);
}
SeriesCollection getRandomData()
{
SeriesCollection SC = new SeriesCollection();
Series s1 = new Series("Series 1");
s1.Elements.Add(new Element("",5,5));
s1.Elements.Add(new Element("",6,15));
s1.Elements.Add(new Element("",9,35));
s1.Elements.Add(new Element("",17,55));
Series s2 = new Series("Series 2");
s2.Elements.Add(new Element("",2,63));
s2.Elements.Add(new Element("",8,53));
s2.Elements.Add(new Element("",9,122));
s2.Elements.Add(new Element("",15,93));
s1.DefaultElement.Color = Color.FromArgb(49,255,49);
s2.DefaultElement.Color = Color.FromArgb(255,255,0);
SC.Add(s1);
SC.Add(s2);
return SC;
}
</script>
</HEAD>
<BODY>
<DIV align="center">
<dotnet:Chart id="Chart" runat="server" Width="568px" Height="344px">
</dotnet:Chart>
</DIV>
</BODY>
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