Question about using Zedgraph [modified]

[Rafone]

If this isn't the right place for this question please let me know. I was playing with one of the samples Multi Y Graph. I added a couple of varibles and execute it 4 different times via mouse click. The first time through all works as expected. The second time through the x and y axis work correctly but the 3rd and 4th do not. Can anyone point me in the right direction. Here is the code I am using...

public partial class Form1 : Form
{
private static int clickCount = 0;
//
private LineItem myCurve;
//
public Form1()
{
InitializeComponent();
}

    #region Graph Test

    // Call this method from the Form\_Load method, passing your ZedGraphControl instance
    public void CreateChart(ZedGraphControl zgc)
    {

        // Get a reference to the GraphPane
        GraphPane myPane = zgc.GraphPane;

        // Set the titles and axis labels
        myPane.Title.Text = "Demonstration of Multi Y Graph";
        myPane.XAxis.Title.Text = "Time, s";
        myPane.YAxis.Title.Text = "Velocity, m/s";
        myPane.Y2Axis.Title.Text = "Acceleration, m/s2";

        // Make up some data points based on the Sine function
        PointPairList vList = new PointPairList();
        PointPairList aList = new PointPairList();
        PointPairList dList = new PointPairList();
        PointPairList eList = new PointPairList();

        // Fabricate some data values
        for (int i = 0; i < 30; i++)
        {
            double time = (double)i;
            double acceleration = 2.0;
            double velocity = acceleration \* time;
            double distance = acceleration \* time \* time / 2.0;
            double energy = 100.0 \* velocity \* velocity / 2.0;
            aList.Add(time, acceleration);
            vList.Add(time, velocity);
            eList.Add(time, energy);
            dList.Add(time, distance);
        }
        if (clickCount == 1)
        {
            // Generate a red curve with diamond symbols, and "Velocity" in the legend
            LineItem myCurve = myPane.AddCurve("Velocity",
               vList, Color.Red, SymbolType.Diamond);
            // Fill the symbols with white
            myCurve.Symbol.Fill = new Fill(Color.White);
            //
            // Make the Y axis scale red
            myPane.YAxis.Sca

[Not Active]

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---

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[Rafone]

thanks for the tip Statistics are like bikini's... What they reveal is astonishing ... But what they hide is vital ...

[Thomas Krojer]

Try this in your button click event:

clickCount++;
if (clickCount > 4)
{
clickCount = 1;
zgc.GraphPane = new GraphPane();
}
CreateChart(zgc);

some work with the pane size remains ...

[Rafone]

That did it...Thanks so much for your time rafone Statistics are like bikini's... What they reveal is astonishing ... But what they hide is vital ...

[Thomas Krojer]

you´re welcome

[Thomas Krojer]

Did you find the solution for keeping the size of your GraphPane? If not, here is it: You need 2 floats

private float myHeight = 0;
private float myWidth = 0;

and in your CreateChart, right after

GraphPane myPane = zgc.GraphPane;

you add:

if (myHeight == 0)
{
myWidth = myPane.Rect.Size.Width;
myHeight = myPane.Rect.Size.Height;
}
else
{
if (myPane.Rect.Size.Width < myWidth)
{
myPane.Rect = new RectangleF(0, 0, myWidth, myHeight);
}
}

[Rafone]

Thank you Thomas. I was using a different work around but I like this way better. Thanks again for your time and expertise. rafone

Statistics are like bikini's... What they reveal is astonishing ... But what they hide is vital ...