open_outlines_from_closed_outlines: open_outlines_from_closed_outlines

In yesdavid/outlineR: An R package to derive outline shapes from (multiple) artefacts on JPEG images

Description

A function to create open outlines from closed outlines. The way it is implemented, the open outline will start at the highest, left-most coordinate, run clock-wise, and will end at the lowest, left-most coordinate. The starting point is found using the shortest distance from an arificial point on X = 0 and Y = max(current_outline_df$Y) (i.e., the overall highest Y-coordinate), to the artefacts outline. The ending point is found using the starting points X-coordinate and it's corresponding minimum Y-coordinate.

Usage

open_outlines_from_closed_outlines(
  outlines_combined,
  return_combined_outlines = TRUE
)

Arguments

outlines_combined	A Momocs Out file containing closed outlines.
return_combined_outlines	(default = TRUE) A logical parameter stating wether to output a Momocs Opn-file, or a list of coordinate matrices of each open outline.

Details

This works only for artefacts, which have their supposed open side on their left and have been prepared in a way, so that this open left side is a straigt vertical line.

Value

If return_combined_outlines = TRUE, returns the combined Coo objects in a single Opn file. If return_combined_outlines = FALSE, returns a list of coordinate matrices of each open outline.

yesdavid/outlineR documentation built on Nov. 17, 2021, 4:08 p.m.