Steema Central

Posted: **Sat Sep 17, 2016 11:34 am**

Hi Steema Support,

We want to create Tornado plot For that we are using horizontal Bar. We are facing a issue that the bar is always starting from axis origin as shown in image below:

: img 1; steem2.png (3.42 KiB) Viewed 12007 times

in this we have given value:

horizbar.Add(8,"Dip");

so it is drawing like the above img.

But we want something like the below image:

: img2; img2.png (4.11 KiB) Viewed 12007 times

So here we want that our bar should draw between value 8 to 23 as shown in above image.
Means we do not want to draw bar from axis scale or from origin.

please provide any solution asap.

Thanks in advance.

Regards,
Planoresearch

Posted: **Mon Sep 19, 2016 8:50 am**

Hello,

You could try using a Gantt series, e.g.

Code: Select all

    Gantt series;
    private void InitializeChart()
    {
      tChart1.Aspect.View3D = false;
      series = new Gantt(tChart1.Chart);

      series.Add(8, 23, 0, "Dip", Color.Red);
      series.Pointer.VertSize = 40;
      series.XValues.DateTime = false;
      tChart1.Axes.Bottom.SetMinMax(0, 25);
    }

which gives this:

: 636098790206516110.jpg (35.9 KiB) Viewed 11995 times

Posted: **Thu Sep 22, 2016 8:08 am**

Hi Steema Support.

Thanks for the response. I am using the the way you have suggested but I am unable to show the Markstip on the Chart. How to show the Markstip as showing in the above image.

When we use Gantt.marks.visible =true;

then it shows markstip on the mid of the series but we want show it on both side (left side of the bar and right side of the bar not in the mid of the series). as shown in above image.

Please provide the solution as soon as possible. very urgent..

Thanks in advance.
Plano Research Corporation

Posted: **Thu Sep 22, 2016 12:36 pm**

Hello,

As you already know, it is possible to draw custom elements onto the chart. If you wish full control over the series marks, you could simply draw your own e.g.

Code: Select all

    Gantt series;
    private void InitializeChart()
    {
      tChart1.Aspect.View3D = false;
      series = new Gantt(tChart1.Chart);
      series.Add(8, 23, 0, "Dip", Color.Red);
      series.Pointer.VertSize = 40;
      series.XValues.DateTime = false;
      tChart1.Axes.Bottom.SetMinMax(0, 35);

      tChart1.AfterDraw += TChart1_AfterDraw;
    }

    private void TChart1_AfterDraw(object sender, Graphics3D g)
    {
      Action DrawMarks = () =>
      {
        for (int i = 0; i < series.Count; i++)
        {
          g.Font.Size = 16;
          string text = series.Labels[i];
          int buffer = 5;
          int height = (int)Math.Ceiling(g.TextHeight(text)) + buffer;
          int width = (int)Math.Ceiling(g.TextWidth(text)) + buffer;
          int xPos = series.CalcXPosValue(series.EndValues[i]) + width;
          int yPos = series.CalcYPos(i) - (height / 2);
          Rectangle rect = Utils.FromLTRB(xPos, yPos, xPos + width, yPos + height);
          g.Brush.Color = Color.Yellow;
          g.Rectangle(rect);
          g.TextOut(rect.X + (buffer / 2), rect.Y + (buffer / 2), text);
          g.Pen.Color = Color.White;
          g.Pen.Width = 3;
          g.HorizontalLine(xPos - width, xPos, yPos + (height / 2));
        }
      };

      DrawMarks();
    }

: 636101518132009907.jpg (40.79 KiB) Viewed 11970 times

Posted: **Fri Sep 23, 2016 5:10 am**

Hi Steema Support

Thanks a lot. One more thing I want to also display the Markstip Left Side of the Bar as well.

Thanks in Advance

Plano Research

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