diff (var x, int Period): var
Returns the difference of x to its value from Period bars before.
||Variable for difference calculation.
x - previous x
- This function generates a series and thus must be called in a fixed order in the script.
- diff(log(x),1) returns the log return of x , since log(a/b) = log(a) - log(b).
// generate a price difference serie
vars Changes = series(diff(priceClose(),1));
series, rev, ROCP