Index outside the bounds of the array.

[stigbert]

Hi Sandra,
I have tried to reproduce the zoom problem, but I can't.

Where can I find the tutorials?

Regards,
Petter

[stigbert]

Hi Sandra,
Never mind the tutorials, I've found them. I think that the axis is not the one I am looking for. When I double-click in the graph, I get a vertical line (related to the cursorTool?) above this vertical line is a label containing the most significant part of the OADate for that x-value. I'd like to set the label to the actual time, i.e. 12:04:00.

Regards,
stigbert / Petter

[Sandra]

Hello Petter,

Ok. I have a simple code that I think can helpful you to achieve as you want:

Code: Select all

  public Form1()
        {
            InitializeComponent();
            InitializeChart();

        }
       
        private void InitializeChart()
        {
            Steema.TeeChart.Styles.Bar bar1 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
            DateTime dt = DateTime.Now;
            Random rnd = new Random();
           
            for (int i = 0; i < 10; i++)
            {
                bar1.Add(dt.ToOADate(), rnd.Next(100));
                dt = dt.AddHours(1);
            }
            tChart1.Axes.Bottom.Labels.DateTimeFormat = "HH:mm:ss";
            tChart1.Axes.Bottom.Increment = Steema.TeeChart.Utils.GetDateTimeStep(Steema.TeeChart.DateTimeSteps.TwoHours);
            tChart1.MouseDoubleClick += new MouseEventHandler(tChart1_MouseDoubleClick);
            tChart1.UndoneZoom += new EventHandler(tChart1_UndoneZoom);

        }

        void tChart1_UndoneZoom(object sender, EventArgs e)
        {
            tChart1[0].XValues.DateTime = false;
        }

        void tChart1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            tChart1[0].XValues.DateTime = true;
            tChart1.Axes.Bottom.Labels.DateTimeFormat = "HH:mm:ss";
        }

Please can you please tell us if previous code works as you expect?

Thanks,

[stigbert]

Hi Sandra,
I used the idea of turning on and of DateTime and setting the format of the labels of the bottom axes and it did not work. As I said in the previous post, I don't think this has to do with the axes (nor the zooming, since in this case, we do not use zooming). The problem is the setting of the label of the cursortool and it doesn't seem to be a public property.

Regards,
stigbert / Petter

[Sandra]

Hello Petter,

Ok. I have made a new example where I am using a cursorTool, annotationTool and DateTime values:

Code: Select all

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            InitializeChart();
        }
        private Steema.TeeChart.Styles.Line line1;
        private Steema.TeeChart.Tools.CursorTool cursorTool1;
        private Steema.TeeChart.Tools.Annotation ann;
        private double xval;
        private void InitializeChart()
        {
            tChart1.Aspect.View3D = false;
           
            //Tools
            cursorTool1 = new Steema.TeeChart.Tools.CursorTool(tChart1.Chart);
            cursorTool1.Style = Steema.TeeChart.Tools.CursorToolStyles.Vertical;
            cursorTool1.Pen.Style = System.Drawing.Drawing2D.DashStyle.Dash;
            cursorTool1.FollowMouse = true;
            ann = new Steema.TeeChart.Tools.Annotation(tChart1.Chart);
            ann.Shape.Pen.Visible = false;
            ann.Shape.Shadow.Visible = false;
            ann.Shape.ShapeStyle = Steema.TeeChart.Drawing.TextShapeStyle.RoundRectangle;
           //Series
            line1 = new Line(tChart1.Chart);
            line1.Pointer.Visible = true;
            DateTime dt = DateTime.Now;
            Random rnd = new Random();

            for (int i = 0; i < 10; i++)
            {
                line1.Add(dt, rnd.Next(100));
                dt = dt.AddHours(1);
            }
            //Axes
            tChart1.Axes.Bottom.Labels.DateTimeFormat = "HH:mm:ss";
            //Events
            tChart1.AfterDraw +=new Steema.TeeChart.PaintChartEventHandler(tChart1_AfterDraw);
            cursorTool1.Change +=new Steema.TeeChart.Tools.CursorChangeEventHandler(cursorTool1_Change);
            tChart1.Draw();
        }
        private double InterpolateLineSeries(Steema.TeeChart.Styles.Custom series, int firstindex, int lastindex, double xvalue)
        {
            int index;
            for (index = firstindex; index <= lastindex; index++)
            {
                if (index == -1 || series.XValues.Value[index] > xvalue) break;
            }
            // safeguard
            if (index < 1) index = 1;
            else if (index >= series.Count) index = series.Count - 1;
            // y=(y2-y1)/(x2-x1)*(x-x1)+y1
            double dx = series.XValues[index] - series.XValues[index - 1];
            double dy = series.YValues[index] - series.YValues[index - 1];
            if (dx != 0.0) return dy * (xvalue - series.XValues[index - 1]) / dx + series.YValues[index - 1];
            else return 0.0;
        }

        private double InterpolateLineSeries(Steema.TeeChart.Styles.Custom series, double xvalue)
        {
            return InterpolateLineSeries(series, series.FirstVisibleIndex, series.LastVisibleIndex, xvalue);
        }

        private void cursorTool1_Change(object sender, Steema.TeeChart.Tools.CursorChangeEventArgs e)
        {
            xval = e.XValue;
            ann.Text = "";
            for (int i = 0; i < tChart1.Series.Count; i++)
                if (tChart1.Series[i] is Steema.TeeChart.Styles.Custom)
                {
                    ann.Text += DateTime.FromOADate(e.XValue).ToString("HH:mm:ss");
                }
        }

     
        private void tChart1_AfterDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g)
        {

            int xs = tChart1.Axes.Bottom.CalcXPosValue(xval);
            int ys;
            g.Brush.Visible = true;
            g.Brush.Solid = true;
            for (int i = 0; i < tChart1.Series.Count; i++)

                if (tChart1.Series[i] is Steema.TeeChart.Styles.Custom)
                {
                    ys = tChart1.Series[i].GetVertAxis.CalcYPosValue(InterpolateLineSeries(tChart1.Series[i] as Steema.TeeChart.Styles.Custom, xval));
                    g.Brush.Color = tChart1.Series[i].Color;
                    g.Ellipse(new Rectangle(xs - 4, ys - 4, 8, 8));
                    ann.Top = ys;
                    ann.Left = xs;
                }
        }
    }
}

Can you tell us if previous code works as you expect?

I hope will helps.

Thanks,

[stigbert]

Hi again Sandra,

the label of the cursortool still shows the most significant part of the OADate.

Regards,
Petter

[Sandra]

Hello Petter,

Could you tell us how you want appear the DateTimeFormat , eg: "dd/MM/yyyy HH:mm";

Thanks,

[stigbert]

Hi Sandra,

We want the label to show the time of day in the format HH:mm:ss

Regards,
Petter

[Sandra]

Hello Petter,

Using last version 4 and previous code I have attached in this thread I am get next results:

TestDate.jpg (94.03 KiB) Viewed 10642 times

I think code works as I expect. Can you tell please what version are you using now? The problem doesn't occur in last version of TeeChartFor.Net.

Thanks,

[stigbert]

Hi Sandra,

I don't see a label above the cursortool in your chart.

Regards,
Petter

[Sandra]

Hello Petter,

OK. I have attached my project where I have added a cursor tool and an annotation tool that works as a label where its text is in DateTime format. Using this project, I have gotten the results you have seen in the image I have attached in previous post.

SendProject.zip

(19.85 KiB) Downloaded 437 times

Could you please, check my project and run it in your computer and if it doesn't works as you expect, please tell me why? So we try to change it to achieve works as you want.

On the other hand, please would be very helpful for us, if you can tell us which version are you using to make this application.

Thanks