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

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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 ...