Accessing indicator plot data within a strategy

[koganam]

I have an update on this, I got it working when I changed the indicator code from using a DataSeries to the Plot DataSeries.

If you can tell me what I did wrong, I think it might help everyone.

from
if (CurrentBar % 5 == 0)
lower.Set(2, CurrentBar);

to
if (CurrentBar % 5 == 0)
Values[1][2] = CurrentBar;

By default, a DataSeries holds only 256 values: a Plot holds all values. You can make a DataSeries hold all values, either when you initialize it specifically, or you can make all the DataSeries in the indicator hold all values by using a directive (in reality, just setting an enum property of the class) in the Initialize() method.

ref: http://www.ninjatrader.com/support/h...rslookback.htm

http://www.ninjatrader.com/support/helpGuides/nt7/index.html?forcemaximumbarslookback256.htm

[dynoweb]

Thanks koganam, adding MaximumBarsLookBack.Infinite to the strategy fixed the overwrite issue.

The second part of this still exists, which is if I only use the Plot, I have to access [0] plot instance before I can use [2] instance.

// Doesn't work when these next two lines are commented out
// if (FiveBarPattern().Plot1.ContainsValue(0))
// Print(Time + " 0 - FiveBarLower: " + FiveBarPattern().Plot1[0]);

if (FiveBarPattern().Plot1.ContainsValue(2))
Print(Time + " 2 - FiveBarLower: " + FiveBarPattern().Plot1[2]);

Why do I need to access element [0], is there a refresh that happens to element[2] when I try to read element[0]?

I have attached the sample strategy and the sample indicator which illustrates this problem. Look at the console out to see what I'm talking about with and without comments on those lines above.

[koganam]

Thanks koganam, adding MaximumBarsLookBack.Infinite to the strategy fixed the overwrite issue.

The second part of this still exists, which is if I only use the Plot, I have to access [0] plot instance before I can use [2] instance.

// Doesn't work when these next two lines are commented out
// if (FiveBarPattern().Plot1.ContainsValue(0))
// Print(Time + " 0 - FiveBarLower: " + FiveBarPattern().Plot1[0]);

if (FiveBarPattern().Plot1.ContainsValue(2))
Print(Time + " 2 - FiveBarLower: " + FiveBarPattern().Plot1[2]);

Why do I need to access element [0], is there a refresh that happens to element[2] when I try to read element[0]?

I have attached the sample strategy and the sample indicator which illustrates this problem. Look at the console out to see what I'm talking about with and without comments on those lines above.

You will have to investigate your indicator. It is highly restricted, setting values only on a highly restrictive circumstance.

Are there any errors in your log?

[ninZa]

Thanks koganam, adding MaximumBarsLookBack.Infinite to the strategy fixed the overwrite issue.

The second part of this still exists, which is if I only use the Plot, I have to access [0] plot instance before I can use [2] instance.

// Doesn't work when these next two lines are commented out
// if (FiveBarPattern().Plot1.ContainsValue(0))
// Print(Time + " 0 - FiveBarLower: " + FiveBarPattern().Plot1[0]);

if (FiveBarPattern().Plot1.ContainsValue(2))
Print(Time + " 2 - FiveBarLower: " + FiveBarPattern().Plot1[2]);

Why do I need to access element [0], is there a refresh that happens to element[2] when I try to read element[0]?

I have attached the sample strategy and the sample indicator which illustrates this problem. Look at the console out to see what I'm talking about with and without comments on those lines above.

Please try:

if (FiveBarPattern().Plot1.ContainsValue(2) && CurrentBar >= 2)
Print(Time + " 2 - FiveBarLower: " + FiveBarPattern().Plot1[2]);