Access Indicator Plot Values

[shoedad]

I've searched the forum for ways to be able to access the values from an indicator from prior bars but am confused on how to do it. I see that you may be able to use the unsupported ChartControl and maybe that is the way that it needs to be tackled.

Specifically I am trying to access the values for ZigZagDots in the ZigZagUTC indicator.
Can anyone help with that?

I've figured out the index of the ZigZagUTC indicator is 1 but can't figure out how to grab that ZigZagDot value from a bar 10 bars ago.

[Zeos6]

Did you try ZigZagDot[10]?

[NinjaTrader_Matthew]

You shouldn't need to access chart control to get past values. Using the indicators array you should be able to pull a previous value.

Please see the following resource on using [] brackets

http://www.ninjatrader.com/support/forum/showthread.php?t=19346

[shoedad]

I've tried almost every combination that I can think of and still can't get the values to show up.

Here is the last things I've tried.

double myDouble;
myDouble = ZigZagUTC(myDataSeries,3, 5, true, Color.White).ZigZagDot.Get(10)

I've also tried
myDouble = ZigZagUTC(myDataSeries,3, 5, true, Color.White).ZigZagDot[10];

Maybe it's just not possible to get those values out....may have to figure out how to modify the original ZigZagUTC so that I can get them out.

Just too new to the NinjaScript language yet to understand how it works.

[NinjaTrader_Matthew]

You may need to modify the ZigZagUTC to expose those plots or data series.

Please see our Reference Sample on how to do this:

http://www.ninjatrader.com/support/forum/showthread.php?t=4991

[shoedad]

I did look at that last night and it looks to me that it should be exposed as the code in the original ZigZagUTC looks like this

the line that sets the Dot is one of these

if (showdots) ZigZagDot.Set(CurrentBar-lastlobar, lastlo);

or

ZigZagDot.Set(CurrentBar-lasthibar, lasthi);



#region Properties
[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries ZigZagDot
{
get { return Values[0]; }
}

am I missing something?

[NinjaTrader_Matthew]

Can you upload the version of the ZigZag indicator you're using?

[shoedad]

Yep, Here you go.

[NinjaTrader_Matthew]

I'm not having any issues accessing this data. Can you try the following:

			if(CurrentBar <3)
				return;
			
			double test = ZigZagUTC(3, 2, true, Color.Empty).ZigZagDot[3];
			
			Print(test);

[shoedad]

That code does produce numbers and a lot of them, just not correct ones.

For example, I'm looking at a YM 12-12 5min chart and I have a Dot at 12855 and 12691 I'm using the ZigZagUTC with parameters of show 3, span 5, HiLo true, and Color.White

In my code I set it up as you have described above with the code
DotBar = Count - CurrentBar;
double test = ZigZagUTC(3,5,true,Color.Empty).ZigZagDot[5];
Print ("Bar " + DotBar + " is " + test);

and I get this
Bar 18 is 12799
Bar 17 is 12788
Bar 16 is 12805
Bar 15 is 12833
Bar 14 is 12840
Bar 13 is 12844
Bar 12 is 12851
Bar 11 is 12842
Bar 10 is 12838
Bar 9 is 12833
Bar 8 is 12832
Bar 7 is 12833
Bar 6 is 12825
Bar 5 is 12828
Bar 4 is 12821
Bar 3 is 12825
Bar 2 is 12827

[koganam]

That code does produce numbers and a lot of them, just not correct ones.

For example, I'm looking at a YM 12-12 5min chart and I have a Dot at 12855 and 12691 I'm using the ZigZagUTC with parameters of show 3, span 5, HiLo true, and Color.White

In my code I set it up as you have described above with the code
DotBar = Count - CurrentBar;
double test = ZigZagUTC(3,5,true,Color.Empty).ZigZagDot[5];
Print ("Bar " + DotBar + " is " + test);

and I get this
Bar 18 is 12799
Bar 17 is 12788
Bar 16 is 12805
Bar 15 is 12833
Bar 14 is 12840
Bar 13 is 12844
Bar 12 is 12851
Bar 11 is 12842
Bar 10 is 12838
Bar 9 is 12833
Bar 8 is 12832
Bar 7 is 12833
Bar 6 is 12825
Bar 5 is 12828
Bar 4 is 12821
Bar 3 is 12825
Bar 2 is 12827

This is as I would expect.

The code that sets the dots is very specifically setting dots at only the highs and lows. The Plot is undefined for all other bars, as it is never set. If you try to read undefined values, you are liable to get garbage results.

Maybe if you defined the end result that you are trying to achieve, someone can show you how to go about it?