Add instrument to chart in STRATEGY Analyzer

[alexstox]

So, my strategy:
1) For example, I trade EURUSD - master instrument
2) MyIndex("MSFT") is an indicator that can show me chart of instrument "MSFT" in Strategy Analyzer in addition to master instrument chart.
3) UPDW(MyIndex("MSFT")) is an indicator that uses MyIndex("MSFT") and plot additional line on MyIndex("MSFT") chart.
3) Data history for EURUSD begins from 1990 year
4) Data history for MSFT begins from 2000 year
4) If I set 1990-2014 in Strategy Analyzer - there is one thing: UPDW(MyIndex("MSFT")) plots line even before first value of MyIndex("MSFT") and automatically uses master instrument data (EURUSD).
I need UPDW(MyIndex("MSFT")) should use only MyIndex("MSFT") data and shouldn't plot line before first data of MyIndex("MSFT") and don't use EURUSD data.
As for master instrument I usually use
if (CurrentBars[0] <= 100) return;
So, what should I use in indicator UPDW(MyIndex("MSFT")) to plot line only after first indicator MyIndex("MSFT") value appeared.

[NinjaTrader_JC]

Hello alexstox,

I would suggest using a CurrentBars for each Series like it was discussed previous on this thread to ensure that your Strategy and/or Indicator are not being processed when you do not want them to.

// Checks to ensure all Bars objects contain enough bars before beginning
if (CurrentBars[0] <= BarsRequired || CurrentBars[1] <= BarsRequired)
return;

Basically this check you need for each multi time frame object so the script does not try to run on a series which does not have enough data.

[alexstox]

How to write correct expression in indicator script
if(Inputs[0].ContainsValue(0)) return;

How to write you email?

[NinjaTrader_JC]

Hello alexstox,

ContainsValue() method is going to be mainly used for Indicators to ensure they have valid plots.

See Brett's post on #82

To specifically address your question put the following code near the CurrentBar return check at the top of the file.

http://www.ninjatrader.com/support/f...ad.php?t=33061

if (!MyIndex(MyIndex1).ContainsValue(0)) return;

To send me an email you may send it to support [at] ninjatrader [dot] com with ATTN: JC in the subject.

[alexstox]

It used for indicators in strategy script?

[NinjaTrader_JC]

Hello alexstox,

Yes, it can be used for Indicator inside of another Indicator or Strategy.

[alexstox]

SO! I can write
if(!MyIndex(MyIndex1).Value.ContainsValue(0)) return;
???

I write this way
if(!MyIndex("").Value.ContainsValue(0)) return;
this variant without errors but the chart still the same as at the print-screen

[NinjaTrader_JC]

Hello alexstox,

Please see my email that I sent you.

[alexstox]

Dear JC, thank you very much for your support. Sorry, if I didn't change MyIndex1=""; to MyIndex1="MYINST";
Of course I had this in my script.
Did you get the same problem on your chart as I get? Please see print-screen in previous post.

The main question is how to set UPDW(MyIndex1) indicator to NOT do anything before first data of MyIndex1 will be available? My by default NT takes data from Master Instrument instead of not do anything?
Because of this in UPDW() indicator?
Values[0].Set(Input[0]-5*ATR(ATRbars)[0]);
So, how to fix that?!

[alexstox]

As I understand the problem is because of Initialize() that plots indicator line and doesn't know any limitation. So, as solving I see only by not using Plot() for signal line, but using Draw().

[NinjaTrader_JC]

Hello alexstox,

I do not get the same problem, but I believe the error is related. I get the following message when I try to test out your strategy "Error on calling 'OnBarUpdate' method for indicator 'MyIndex1' on bar 12: You are accessing an index with a value that is invalid since its out of range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart.".

This is because you are calling an Indicator inside of another Indicator inside of your Strategy which is creating another cached instance of your "MyIndex1". You may want to rethinking your approach on this and either just use MyIndex1 as a visual representation and then when you want to access the Second Series Data in another Indicator, add it like you are doing inside of "MyIndex1".

[alexstox]

Let me explain

1. MyIndex("MSFT") indicator represent any instrument from NT - it just only for visualization in Strategy Analyzer.
2. UPDW(MyIndex("MSFT")) - another indicator that uses MyIndex("MSFT") data and draw some signals.
3. In my strategy I call for MyIndex("MSFT") for visualization and for UPDW(MyIndex("MSFT")) for signals.

Please explain your advise on this.

P.S. Wow! It's weird! I didn't have error with OnBarUpdate() before sending you example of scripts
And now I don't know what is wrong and how to fix

[NinjaTrader_JC]

Hello alexstox,

Using "MyIndex("MSFT")" for visualization is fine, but the item that you would want to stay away from is using the "UPDW(MyIndex("MSFT"))".

If you are wanting to have the "MSFT" Data inside of the "UPDW" indicator then you may just want to add it like you are doing inside of "MyIndex" instead of passing it the Indicator "MyIndex".

So it may look like "UPDW("MSFT")" this way your are adding the Data Series inside of an the Indicator instead of your other indicator.