hist_detection {lidaRtRee}

Histogram of detection

Description

Displays the histogram of tree heights of three categories: true detections, omissions, and false detections.

Usage

hist_detection(lr, ld, matched, plot = TRUE)

Arguments

lr

data.frame or matrix. 3D coordinates (X Y Height) of reference positions

ld

data.frame or matrix. 3D coordinates (X Y Height) of detected positions

matched

data.frame. contains pair indices, typically returned by tree_matching

plot

boolean. should the histogram be displayed or not

Value

A list with three numerics: numbers of true detections, omissions and false detections

See Also

tree_matching

Examples

# create reference and detected trees
ref_trees <- cbind(c(1, 4, 3, 4, 2), c(1, 1, 2, 3, 4), c(15, 18, 20, 10, 11))
def_trees <- cbind(c(2, 2, 4, 4), c(1, 3, 4, 1), c(16, 19, 9, 15))
#
# tree matching with different buffer size
match1 <- tree_matching(ref_trees, def_trees)
match2 <- tree_matching(ref_trees, def_trees, delta_ground = 2, h_prec = 0)
#
# corresponding number of detections
hist_detection(ref_trees, def_trees, match1)
hist_detection(ref_trees, def_trees, match2)