ExpAverage returns infinity for some lengths, but not others.

[spongetrader]

I have the following code:

Basically, I'm getting the z-scores for the weighted closing price and then trying to get the 5 EMA of the z-scores.

For lengths 4, 5, and 6 the EMA is the infinity symbol like such:

For other lenghts like 3 and 7, it isn't infinity:

I'm really puzzled by this and don't understand how or why it would be happening.

This is the beginning of a longer script that I already have working in Python and Tradingview. When trying to get it working in thinkScript, I'm running into this odd issue.

 

[Carl-not-Karl]

I am not able to get the infinity symbol using lengths of 4, 5, or 6.
This is the return on using length = 5 (same with 4 and 6):

Might the issue be in your Chart Settings?
Try using a basic default Chart separate from your problem chart with different time settings to see if the issue continues to show.

 

[mashume]

I would guess that your value for STDEV_wcp is zero at some point and you're seeing a divide by zero error represented as the symbol for infinity.

Plot the values for STDEV_wcp by themselves and see if they're going to zero at any point. If they do, you can try to trap for it with a conditional.

-Mashume

P.S. When you post code into useThinkScript, please use the "\[code\]" tag or the "</>" button at the top of the page. That way we can copy and past your code. Helps with debugging. Screenshots are really hard to deal with as we try to help.[/code]