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Filter observations within circle (vectorized)

Source: R/points_in_circle.R
points_in_circle_vec.Rd

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
)

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).

Value

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

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)
#>      id distance_m center_index     street number letter suffix postal_code
#> 1 16611   31.36533            1 Heresingel      5   <NA>   <NA>      9711EP
#> 2  3003   47.79962            1 Heresingel     11   <NA>   <NA>      9711ER
#> 3  1191   57.56884            1 Zuiderpark   1003   <NA>   <NA>      9724AK
#>        city      lon      lat amount
#> 1 Groningen 6.571338 53.21351      5
#> 2 Groningen 6.571767 53.21367     11
#> 3 Groningen 6.571620 53.21274   1003