Extract boundary points from a 3D topographic scan

This function identifies and extracts the boundary points from a 3D topographic scan in x3p format.

Usage

x3p_boundary_points(x3p, sample)

Arguments

x3p

An x3p object representing a topographic scan.

sample

A positive integer that defines the sampling rate for the x and y directions. Every sample value will be included in the output. Higher values lead to faster computation but a less precise boundary representation.

Value

A data frame containing the boundary points. Each row represents a point on the boundary, with x and y columns indicating its coordinates.

Examples

x3p <- x3p_subsamples[[1]]
bounds <- x3p_boundary_points(x3p, 2)

library(ggplot2)
library(dplyr)
bounds %>%
  ggplot(aes(x = x, y = y)) +
  geom_point() +
  theme_bw()