Create a grid of all unique combinations of half-window widths to evaluate. The result can be passed to winsrch_grid.
createsrch( mos = c(seq(0.5,1, by =0.25),2,10), yrs = c(seq(5,15, by =3),50), flo = c(seq(0.5,1, by =0.1),5))
Arguments
mos: numeric vector of half-window widths for months, a value of one indicates twelve months
yrs: numeric vector of half-window widths for years, a value of one indicates one-year
flo: numeric vector of half-window widths for salinity or flow, a value of one indicates the full range of values (100 percent)
Returns
A matrix with number of rows equal to the product of the lengths of each input vector, where each row is a unique combination for the selected half-window widths.
Details
The weighting function uses a tri-cube weighting scheme such that weights diminish with distance from the center of the window. For example, a value of one for the month window does not mean that all months are weighted equally even though the window covers an entire calendar year.