Stochastics not plotting - with Attachment to reproduce

[tazatek]

I've tried to create as minimal of a test scenario as I can.

This works in NT6.5, but not in NT7 B12

Not sure if I've missed one of the upgrade guidelines, have a system problem, or if this is a bug.


Essentially, I've duped my exact scenario that I have in a full blown indicator, so I've got the exact functions (even if empty in the example), just to duplicate it as I'm using it.

Essentially, in NT7, there is a straight line drawn on the bottom.

In NT6.5, Stochastics are drawn.


Could someone take a moment and identify if this is a coding error on my behalf, if I've stumbled onto something bigger, or doing something I'm not supposed too (like an unsupported feature of some kind)

Thanks

Matt

[NinjaTrader_Austin]

tazatek, are there any errors in the logs (right-most tab of Control Center)? By "straight line drawn on the bottom" do you mean that nothing is plotted or the plot never changes?

[tazatek]

Nothing in the logs...

By straight line, I mean a line with a pricemarker of 0 for the entire history of data...

If you run the demo that I uploaded, and open up an output window, you'll see that the input values are good values, but when Stochastics() is called with those parameters, 0 is returned.

I just had it happen to another one of my indicators that I'm working on too... it must be something I'm doing, but I can't seem to see it.

Did you have a chance to run the indicator I uploaded? What should be a stochastic is just a horizontal line at price 0.

Matt

[tazatek]

I think that this is actually a dup of my other thread here. They presented differently so I initially opened them as two different issues.

http://www.ninjatrader-support2.com/vb/showthread.php?p=154881#post154881

[NinjaTrader_Josh]

tazatek,

You cannot do this line:

Indicator = Stochastics(slowPeriodD, slowPeriodK, slowSmooth);

This is not supported.

[tazatek]

so what would be the right way to initialize such an IDataSeries with something that is going to hold an indicator series?

[NinjaTrader_Josh]

tazatek,

Why can't you just call the indicator directly like how you are already doing in OnBarUpdate()?

Otherwise I believe you can try something like this (Note that this is unsupported):
private Stochastics someStoch;

[tazatek]

tazatek,

Why can't you just call the indicator directly like how you are already doing in OnBarUpdate()?

Otherwise I believe you can try something like this (Note that this is unsupported):

private Stochastics someStoch;


I'm passing a DataSeries (Indicator) around into several functions....of which the indicator isn't set at compile time, but at run time (via a dropdown).

Things work fine in NT 6.5, but seems to be breaking in NT7

The example is just a slimmed down version of something much more complex... so I can't just do what I'm doing.

I don't think I'm doing anything too off the wall, but some suggestion of something that will work in NT 7 would be appreciated.

Surely there's a supported way of doing this?

Thanks

Matt

[tazatek]

Would something like this work/be supported?

IDataSeries Indicator
Indicator = new DataSeries(Stochastics(14,7,3));

[NinjaTrader_Josh]

Unfortunately not.

What you could try is just create a generic DataSeries then use a switch to decide what values to set it to that DataSeries through .Set()

[tazatek]

Unfortunately not.

What you could try is just create a generic DataSeries then use a switch to decide what values to set it to that DataSeries through .Set()

So for every barupdate() I'll need to take the result of the indicator, and Set() it into a generic dataseries?

That seems like a safe way to do it...

Do I use an IDataSeries, or just a DataSeries?

Thanks for your suggestion.

Matt

[NinjaTrader_Josh]

Variables region
private DataSeries someSeries;
Initialize()
someSeries = new DataSeries(this);
OnBarUpdate() in some switch
someSeries.Set(Stochastics(7, 14, 3)[0]);