diffn {bspline}

R Documentation

Finite differences

Description

Calculate dy/dx where x,y are first and second columns of the entry matrix 'm'

Usage

diffn(m, ndiff = 1L)

Arguments

m	2- or more-column numeric matrix
ndiff	Integer scalar, order of finite difference (1 by default)

Value

Numeric matrix, first column is midpoints of x, the second and following are dy/dx

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