What does VarName.Set(1, VarName[1]) do?

December 4th, 2010, 12:44 PM

Hello All: What does this statement do?

VarName.Set(1, VarName[1])

Is the "1" an initialization value of some sort?

Thank you for any guidance you can provide.

December 4th, 2010, 01:00 PM

The "1" is an index into an array called VarName.

VarName[1] means the element in the array which has index 1.

December 4th, 2010, 04:22 PM

Xeno, thank you for your reply. This is from the attached Ninja script for the SuperTrend Indicator. I was refering to the first "1", in the line

VarName.Set(1, VarName[1]) (the [1] reference here is to "the value at prior bar")

There are no arrays defined as far as I can see. There are references of similar structure with a single dimension such as

VarName.Set(VarName[1]);

so to see the two arguments is throwing me off.

I am experienced in EL and am trying to convert from the NT script.

Thank you for again for your attention.

December 4th, 2010, 05:26 PM

This is referencing a plot. The first 1 means plot one bar back and the [1] means use the value from one bar back in that plot. This is usually used to join two different line plots together when the color changes else you might get a one bar blank spot.

Dan

December 5th, 2010, 12:55 PM

Danny, got it, thank you very much!

December 5th, 2010, 02:20 PM

jvbehar

Xeno, thank you for your reply. This is from the attached Ninja script for the SuperTrend Indicator.

If your intention is to convert SuperTrend to EL, check here:

EasyLanguage SuperTrend indicator

Here is my version of a TradeStation/MultiCharts EasyLanguage SuperTrend indicator.

I made it a function so it could be called easily from a strategy.

Function:

// SuperTrend function
// March 25 2010
// Big Mike
inputs:
ATRLength(NumericSimple), …

Mike

December 5th, 2010, 03:21 PM

Mike, thanks for tip. That is actually where I started. I ran your code but the display was nothing like the NT indicator that supposedly does the same thing. I could not really tell why, hence I needed to convert line-by-line directly from the NT script to see where the discrepancy was. I believe the code difference is minor but the resulting display differences are not.

If you are familiar with Ninja script I would appreciate if you take a quick look at the attached, maybe something will jump out at you.

Thank you in advance.

JBehar

What does VarName.Set(1, VarName[1]) do?

Discussion in NinjaTrader

What does VarName.Set(1, VarName[1]) do?