Update indicator plot in strategy

[ngsevers]

Hi,

I'm developing a strategy that uses Add(Indicator(StartingPeriod)) inside Initialize() to show plot using a user defined Parameter for StartingPeriod.

Inside the strategy when Indicator(StartingPeriod) is called, StartingPeriod is a dynamic variable, and changes OnBarUpdate().

How can I update the plot of Indicator(StartingPeriod) in the OnBarUpdate().

Thanks!

[NinjaTrader_Bertrand]

ngsevers, welcome to our forums - this is something undocumented so we could not officially support it, however have you tried Indicator(StartingPeriod).YourUserInput = your new period value?

[ngsevers]

Hi Bertrand,

Thanks for the reply; i've already tried that.. the graph still shows the output with the original StartingPeriod unchanged.. do you have any other ideas?

Thanks in advance!
Noah

[NinjaTrader_Bertrand]

Another idea would be coding the dynamic adjustment directly into the study you Add() in visuals, this way all is taken care of internally already.

[ngsevers]

The only way I could see to do it would be to move the dynamic period calculations into the indicator itself. But this seems kind of backwards..

Is there not a way to access the parameter of the indicator that was added using the Add() method and modify it and force an update of the graph.. something like Indicator(StartingPeriod).Update() ?

[NinjaTrader_Bertrand]

Unfortunately there would be nothing supported I can offer here. In my testing setting the period for example of the added script worked out as I would expect, that's the only idea I would have to workaround.

[ngsevers]

Are you testing on live data or backtesting.. I was backtesting when testing Indicator(StartingPeriod).YourUserInput = your new period value..

I haven't checked to see if it functions differently on live data or if it makes a difference..

[NinjaTrader_Bertrand]

I was backtesting directly applied to a chart.