Draw Text and Arrow Scaling Issue

[Mokaru Zen]

Hello Support,

I am able to draw text above arrow or below arrow by using offset of some multiple of TickSize setting, but sometime when chart is more compressed, the text become overlapped with the arrow (as the arrow size is fixed). Do you have sample code on how to do this ensuring no overlap? I read the reference on ChartScale but does not understand it, there is no sample code on the that entries. There is GetPixelsForDistance in the reference, but compiler flag error "does not exist in current context".

Thank you.

Best Regards,
Mokaru Z.

[Mokaru Zen]

Picture is attached showing the Error flagged by NinjaScript compiler. What should I do to resolve this issue? Thanks.

[Mokaru Zen]

I am making progress.
I have this statement:

float mychartScale = ChartScale.GetPixelsForDistance(TickSize);

And get error as in the attached picture.

[NinjaTrader_ChrisL]

Hi, thanks for posting.

Your ChartScale object is likely null in this. GetPixelsForDistance is used within OnRender where you get a chartScale object in the parameters. If you are using Draw.Arrow or Draw.Text then OnRender is not needed at all. If you do want to use OnRender, the objects must be drawn using SharpDX.

Kind regards,
-ChrisL

[Mokaru Zen]

Hello Chris,

Is that how the "plot execution" with text and marker achieved? When I change Y-axis scale with mouse, it was not affected. Any sample code on the use of OnRender and SharpDX?

Thank you.

Mokaru Z

[NinjaTrader_ChrisL]

Hi Mokaru, thanks for your reply.

The text and execution markers are rendered internally with SharpDX (along with all the drawing tools). There are many examples of using SharpDX, see the "SampleCustomRender" script in the Indicators folder for a showcase of what SharpDX can do.

Best regards,
-ChrisL

[Mokaru Zen]

Noted. Thanks Chris.