FuzzyNumbers: approxInvert – R documentation

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approxInvert

Approximate the Inverse of a Given Function

The function may be used to create side generating functions from alpha-cut generators and inversely.

approxInvert(f, method = c("monoH.FC", "linear", "hyman"), n = 500)

`f`	a monotonic, continuous function f: [0,1]->[0,1]
`method`	interpolation method: “`monoH.FC`', “`hyman`” or “`linear`”
`n`	number of interpolation points

The function is a wrapper to splinefun and approxfun. Thus, interpolation is used.

Returns a new function, the approximate inverse of the input.