metrics_percabove: Percent of points above threshold

In ptompalski/lidRmetrics: Point cloud metrics for the lidR package.

Percent of points above threshold

Description

Calculates percentage of points above specified threshold heights and mean height.

Usage

metrics_percabove(z, threshold = c(2, 5), zmin = NA)

.metrics_percabove

Arguments

z	Z coordinate of the point cloud (point heights)
threshold	Numeric. Threshold height(s). Default = c(2, 5).
zmin	numeric. Minimum z value. If set, z values (heights) below are ignored in calculations.

Format

An object of class formula of length 2.

Value

A list. Percent of points above mean and above threshold value(s).

Examples

library(lidR)
library(lidRmetrics)
LASfile <- system.file("extdata", "Megaplot.laz", package="lidR")
las <- readLAS(LASfile, select = "*", filter = "-keep_random_fraction 0.5")

m1 <- cloud_metrics(las, ~metrics_percabove(z = Z))

m2 <- pixel_metrics(las, ~metrics_percabove(z = Z, zmin = 2), res = 20)

ptompalski/lidRmetrics documentation built on June 1, 2025, 1:08 p.m.