mindistkeep: Detecting Absence of Movement in an Object of Class 'ltraj'

In adehabitatLT: Analysis of Animal Movements

Detecting Absence of Movement in an Object of Class 'ltraj'

Description

Objects of class ltraj are often created with data collected using some form of telemetry (radio-tracking, G.P.S., etc.). However, the relocations of the monitored animals are always somewhat imprecise. The function mindistkeep considers that when the distance between two successive relocations is lower than a given threshold distance, the animal actually does not move (and replaces the coordinates of relocation i+1 by the coordinates of relocation i).

Usage

mindistkeep(x, threshold)

Arguments

x	An object of class ltraj
threshold	The minimum distance under which is is considered that the animal does not move

Value

An object of class ltraj

Author(s)

Clement Calenge [e-mail]

See Also

ltraj

Examples

data(puechcirc)
plot(puechcirc)

i <- mindistkeep(puechcirc, 10)
plot(i)

adehabitatLT documentation built on Sept. 11, 2024, 7:15 p.m.