Plot starts from the last visible bar

[Marty125]

Why my plot (red) starts from the center of the last visible bar? For comparison white plot is something 3rd party. Thanks

[NinjaTrader_Jesse]

Hello Marty125,

That may be due to how the custom item is plotting, are you using AddPlot for your plot?

[Marty125]

Hi Jesse, thanks for the quick response.

Yes, I use AddPlot().

[NinjaTrader_Jesse]

Hello Marty125,

Thanks for confirming that.

The custom item is likely using OnRender to draw that instead of AddPlot, when using Onrender you can use custom X locations which could be the left of the bar or center or right.

[Marty125]

I thought, when you said OnRender, that they use RenderTarget.DrawLine(). But when I click on theirs, it shows same bubles as my Plot (red). Or is there any way to plot Plot in OnRender?

[NinjaTrader_Jesse]

Hello Marty125,

The selection bubbles still appear if they added a plot, they can choose to hide the plot by using OnRender and still draw a custom line.

[Marty125]

So if I understand correctly, there is AddPlot(), on every bar there is Value[0] = value, and Color of the plot is transparent (or they didnt put base.OnRender(chartControl, chartScale) in OnRender - I dont know what exactly it does with plot) and then rendered the line as i said line by line with values from the Plot series?

[NinjaTrader_Jesse]

Hello Marty125,

Yes that is an accurate understanding.

You can use ShowTransparentPlotsInDataBox to toggle if the plot is used in the databox or not when using a transparent color and you can also not use base.OnRender() to prevent the rendering of plots. OnRender can then be used to render a line in whatever way you wanted. The original plot can be used to gather values from in OnRender so it is still useful for a series to store values.

[Marty125]

Awesome, thank you Jesse.