spatialrisk (version 0.7.3)

points_in_circle_vec: Filter observations within circle (vectorized)

Description

Filter all observations in a data.frame that fall within a circle of a specified radius drawn around a given latitude and longitude point.

Usage

points_in_circle_vec(
  data,
  lon_center,
  lat_center,
  lon = lon,
  lat = lat,
  radius = 200
)

Value

A subset of the input data.frame containing only the observations that fall within the specified circle.

Arguments

data

data.frame with at least columns for longitude and latitude.

lon_center

numeric. Representing the longitude of the circle's center.

lat_center

numeric. Representing the latitude of the circle's center.

lon

column name in data containing longitudes (default is lon).

lat

column name in data containing latitudes (default is lat).

radius

radius of the circle in meters (default is 200m).

Author

Martin Haringa

Examples

points_in_circle_vec(Groningen, lon_center = c(6.571561, 6.56561),
lat_center = c(53.21326, 53.20326), radius = 60)