calc_visit: Calculation of visits around a point.

In rpatin/mapvisit: mapvist for animal movement data analysis

Description

Takes a points and calculates the number, total, mean and median time of visits inside a given distance of this point.

Usage

calc_visit(current_center, sfdf, radius = NULL, maxtime = NULL,
  time_out = NULL, timecol = NULL, units = NULL, proj4string = NULL)

Arguments

current_center	spatialPoints on which visit calculations should be done
radius	radius for visit
maxtime	maximum time to consider relocation as successive and add time before first point and after last point proportional to the part of the segment inside the circle.
time_out	maximum time individuals are allowed to leave the circle without considering a new visit
timecol	name of spdf@data time column
units	unit used for maxtime and time_out
proj4string	projection string. Default UTM35S.
spdf	spatialPointsDataFrame with movement data.

Value

a named list with data.

Examples

calc_visit(current_center, spdf ,radius = 500, maxtime = 5, time_out = 2, timecol = "dateTime", units = "hour", proj4string = "+proj=utm +zone=19 +datum=WGS84 +units=m +no_defs")

rpatin/mapvisit documentation built on May 14, 2019, 9 a.m.