vtreat
custom coder based on RcppDynProg::solve_for_partition()
.
piecewise_constant(varName, x, y, w = NULL)
character, name of variable to work on.
numeric, input values.
numeric, values to estimate.
numeric, weights.
piecewise_constant("x", 1:8, c(-1, -1, -1, -1, 1, 1, 1, 1))
#> [1] 0 0 0 0 0 0 0 0
#> attr(,"approx_table")
#> predXs predYs
#> 1 1 0
#> 2 8 0
#> attr(,"method")
#> [1] "constant"