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Continuous piecewise-linear fit given a set of changepoints

Source: R/fit.R
piecewise_linear_con.Rd

Given observed times t and coordinates x, y, and a vector of changepoint indices this_cp, compute the maximum likelihood continuous piecewise-linear anchor path (Section 2.2 of the companion paper).

Usage

piecewise_linear_con(t, x, y, this_cp, old_version = TRUE)

Arguments

t

numeric vector of observation times.

x

numeric vector of x-coordinates.

y

numeric vector of y-coordinates.

this_cp

integer vector of changepoint indices.

old_version

logical. If TRUE (default), return the flat list format used internally by CS and MHsearch. If FALSE, return the `tibble`-based format (`path_inferred`, `segments_inferred`) used by the plotting and CSA helpers.

Value

See Details; matches the original function's return format.

Details

This is a drop-in replacement for the original research-script function of the same name: the argument list and the structure of the returned list are unchanged, so existing scripts that call piecewise_linear_con() do not need to be modified. Internally it now delegates to an internal fast fitting routine, which fits both coordinates from a single QR decomposition instead of two.