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

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

## Arguments

varName character, name of variable numeric, factor, or character input (not empty, no NAs). numeric (same length as x no NAs), output to match numeric positive, same length as x (weights, can be NULL)

## Value