Detecting Absence of Movement in an Object of Class 'ltraj'
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).
mindistkeep(x, threshold)
x |
An object of class |
threshold |
The minimum distance under which is is considered that the animal does not move |
An object of class ltraj
Clement Calenge clement.calenge@ofb.gouv.fr
data(puechcirc) plot(puechcirc) i <- mindistkeep(puechcirc, 10) plot(i)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.