Applying EMA to spread

[FPI <fpi@xxxxxxxxxxxx>]

Hi!

I would like to apply an exponential moving average to a spread (x/y).

Of course, my selection of what to base the study on is limited to either 
Data1 or Data2, not the spread itself.

I'm sure there's a fairly simply way of doing this, but I don't know it.

Anyone have a solution they'd care to share?

Thanks!

FPI