line graph with unique x values

[Dan]

Hi,

I have been working with the chart control to make a line chart with x & y values from an external data source. The x values may be very unevenly spaced decimals values or negative numbers, so I need to set the items on this axis from code. Can someone give me a good example of how to do this?

I have a poorly functioning example below. Unfortunately, this example graphs both values as two lines.

protected void Page_Load(object sender, EventArgs e)
{
    List<MyObject> myList = new List<MyObject>();

    myList.Add(new MyObject { yValue = 3, xValue = -20 });
    myList.Add(new MyObject { yValue = -1, xValue = -10 });
    myList.Add(new MyObject { yValue = -5, xValue = 3 });
    myList.Add(new MyObject { yValue = 1, xValue = 5 });
    myList.Add(new MyObject { yValue = 8, xValue = 6.5 });
    myList.Add(new MyObject { yValue = 4, xValue = 7 });
    myList.Add(new MyObject { yValue = 3, xValue = 10 });
    myList.Add(new MyObject { yValue = 7, xValue = 15 });

    RadChart1.PlotArea.XAxis.IsZeroBased = false;
    RadChart1.DataSource = myList;
    RadChart1.PlotArea.XAxis.DataLabelsColumn = "xValue";

    RadChart1.DataBind();
}

public class MyObject
{
    public double yValue { get; set; }
    public double xValue { get; set; }
}

Thank you for you help!
Dan

[Yavor]

Hi Dan,

If you would like to set the text of the labels along the axis from code, please take a look at the following article:

http://www.telerik.com/help/aspnet-ajax/radchart-how-to-add-axis-labels-programmatically.html

I hope this gets you started properly.

Regards,
Yavor
the Telerik team