smooth.spline.poly: whuber's spline.poly adapted to stats::smooth.spline
In gerbeldo/tidycell: CellID Data Analysis Inside the Tidyverse

smooth.spline.poly

R Documentation

whuber's spline.poly adapted to stats::smooth.spline

Description

See: https://gis.stackexchange.com/a/24929

Usage

smooth.spline.poly(xy, k = 3, dof = 5, ...)

Arguments

`xy`	A data.frame with ordered X/Y pairs representing the polygon
`k`	The amount of points used to "close" the path, and prevent discontinuous derivatives at the end-points.
`dof`	The degrees of freedom used by `stats::smooth.spline`

Details

Splining a polygon with stats::smooth.spline

The rows of 'xy' give coordinates of the boundary vertices, in order. 'vertices' is the number of spline vertices to create. (Not all are used: some are clipped from the ends.) 'k' is the number of points to wrap around the ends to obtain a smooth periodic spline.