Kernel functions for distance weighting
Examples
values_weight_func
#> [1] "rectangular" "triangular" "epanechnikov" "biweight" "triweight"
#> [6] "cos" "inv" "gaussian" "rank"
weight_func()
#> Distance Weighting Function (qualitative)
#> 9 possible values include:
#> 'rectangular', 'triangular', 'epanechnikov', 'biweight', 'triweight', 'cos',
#> 'inv', 'gaussian', and 'rank'
