Y coordinates for values plotted ScaleJustification.Left

[jvanelli]

I have an indicator with two series plotted. Primary series is plotted with ScaleJustification.Right, and second series is plotted with ScaleJustification.Left. In Ninjascript how can I get Y coordinates for the second series values plotted with ScaleJustification.Left?

[jvanelli]

I should note that I do have a workaround, which is to create a second indicator running on my second series and assigned to the same panel but with output to the left scale. OnRender for this second indicator operates with ScaleJustification.Left where I can get the Y coordinates for my second series and communicate those values to the other indicator as static or common variables through an Add-On. This works. It is clumsy. It may not be the most efficient approach.

[NinjaTrader_ChrisL]

HI jvanelli, thanks for posting. ScaleJustification is a property of the indicator and not the Plot objects. To access data from each Plot you can use the Values[][] array. e.g. Values[0][0] for the first plot and Values[1][0] for the second plot.

Kind regards,
-ChrisL

[jvanelli]

Of course, but getting the values is not my question. What I need to obtain is the Y (pixel) coordinate for the second series, such as would be returned by GetYByValue().

[NinjaTrader_ChrisL]

HI jvanelli, GetYByValue() is a method of the ChartScale object, so GetYByValue will use the respective ChartScale of the indicator you are working with. This can be tested in OnRender by printing the value of GetYByValue(Value[0]);

Kind regards,
-ChrisL

[jvanelli]

So if I understand what you are saying, there is no direct way to plot a primary series on right scale, a secondary series on left scale, and then access pixel coords for both from the same indicator script.

[NinjaTrader_ChrisL]

Hi jvanelli, An indicator can access all Scales on the chart, see here:

https://ninjatrader.com/support/helpGuides/nt8/NT%20HelpGuide%20English.html?chartscale_chartpanel.htm

One indicator can create an object of the other indicator to get its Series values, and use GetYByValue() for the chart scale in the above collection. That would be the best way to get the y coordinate without directly accessing it or sharing it through an addon.

[jvanelli]

This looks promising. Thank you.