`R/isotone.R`

`solveNonDecreasing.Rd`

Return a vector of length y that is a function of x (differs at must where x differs) obeying the same order constraints as x. This vector is picked as close to y (by square-distance) as possible.

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

varName | character, name of variable |
---|---|

x | numeric, factor, or character input (not empty, no NAs). |

y | numeric or castable to such (same length as x no NAs), output to match |

w | numeric positive, same length as x (weights, can be NULL) |

isotonicly adjusted y (non-decreasing)

Please see https://github.com/WinVector/vtreat/blob/master/extras/MonotoneCoder.md.

#> [1] 1.0 1.5 1.5