differentiates a ts ignoring NA values
tsout=delda(arg1[,arg2])
* arg1 = the order of differenciation (optional, set to 1 if not provided, can be > 0, = 0 or < 0) or a ts
* arg2 = a time series if the first argument was set to the order of differentiation
* tsout = the differenciated time series
load('GROCERDIR\data\Daily_P.dat') y = delda(P) // simple differentiation of the daily ts P y = delda(1,P) // simple differentiation of the daily ts P y = delda(4,P) // y= P-P(-4) y = delda(-3,x) // y= P-P(+3) | ![]() | ![]() |