Piecewise constant fit.

Source: R/vtreat_coders.R

vtreat custom coder based on RcppDynProg::solve_for_partition().

piecewise_constant(varName, x, y, w = NULL)

Arguments

varName

character, name of variable to work on.
x

numeric, input values.
y

numeric, values to estimate.
w

numeric, weights.

Examples


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"