Check the years to summarize performance
ChkYrs(Yrs, MSEobj)
Numeric vector of length 2 with year indices to summarize performance.
If NULL, the performance is summarized over all projection years.
Yrs
can also be length one, in which case if it is positive it is the first Yrs
and
if negative the last Yrs
of the projection period.
An object of class MSE
A numeric vector of length 2 with year indices to summarize performance