Pixles to BarsAgo Function

[bassam]

Hi,
For example, I want to DrawText which should be located to the right of the last bar on the chart, but if I measure the distance in bars then the text location will be different from daily to minute chart that's based on the space between bars...

The solution I think is to have the distance measured in pixels rather, and convert it to bars accordingly, for example 100 pixels would equal to 3 bars on daily chart or 30 bars on minutes chart.. how to a achieve that (a function)?

Any help would be highly appreciated.

Thanks

[NinjaTrader_CalH]

Hello Bassam,

Thank you for your note,

Please note that this kind of programming is unsupported and I don't have documentation on it.

However, you can get the pixel value of each bar location by using ChartControl.GetXByBarIdx(Bars bar, int idx)

This will return the pixel count at which the bar you requested is located. Additionally, you would need to use DrawString Graphics method as the DrawText requires that you use a BarsAgo number to place it.

You can do the DrawString in the Plot method which an example can be found by going to Tools -> Edit NinjaScript -> Indicator -> CustomPlotSample

http://msdn.microsoft.com/en-us/libr...rawstring.aspx

[bassam]

Thank you Cal.
An example if someone is looking for the same.

it will plot a "sample text" at last bar position.

 #region Variables
private StringFormat            stringFormat    = new StringFormat();
private    SolidBrush                textBrush        = new SolidBrush(Color.Black);
private    System.Drawing.Font        textFont        = new Font("Arial", 10);
  #endregion
protected override void OnTermination()
       {
            textBrush.Dispose();
            stringFormat.Dispose();
        }
public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
        {
            
            int pixles = ChartControl.GetXByBarIdx(BarsArray[0], Count);
            textBrush.Color            = Color.Blue; // set text color
            graphics.DrawString("Upper left corner", textFont, textBrush, bounds.X +pixles, bounds.Y + 300, stringFormat);
        
        }