The reference values are formed based on computations
of seq
for Date class arguments.
refvalIdxByDate(t0, b, w, epochStr, epochs)
a vector of indices in epochs which match
A Date object describing the time point
Number of years to go back in time
Half width of window to include reference values for
One of "1 month"
, "1 week"
or "1 day"
Vector containing the epoch value of the sts/disProg object
Using the Date class the reference values are formed as follows:
Starting from t0
go i, i= 1,...,b
years back in time.
For each year, go w
epochs back and include from here to
w
epochs after t0
.
In case of weeks we always go back to the closest Monday of this date. In case of months we also go back in time to closest 1st of month.