> Hello, I need some help in differencing a time series.
> For example I have a data set with 100 data points. I
> need to create a new dataset that consists of the
> difference of two succeeding data points.
> something akin to this formula in java:
> for (int i = 0, i < 100, i++)
> newdataset[i] = olddataset[i] - olddataset[i-1]
Surely that is incorrect: what is olddataset[-1] in Java?