points_to_polygon: Aggregate attributes of coordinates to area level

In spatialrisk: Calculating Spatial Risk

Description

A data.frame containing coordinates (in terms of longitude and latitude) is joined to the polygon level. Then arithmetic operations on the attributes of the coordinates are applied to obtain aggregated values for each polygon.

Usage

points_to_polygon(sf_map, df, oper, crs = 4326, outside_print = FALSE)

Arguments

sf_map	object of class sf
df	data.frame containing coordinates (column names should be 'lon' and 'lat')
oper	an arithmetic operation on the polygon level
crs	coordinate reference system: integer with the EPSG code, or character with proj4string
outside_print	print points that are not within a polygon (default is FALSE).

Value

an object of class sf

Author(s)

Martin Haringa

Examples

points_to_polygon(nl_postcode2, insurance, sum(amount, na.rm = TRUE))
## Not run: 
shp_read <- sf::st_read("~/path/to/file.shp")
points_to_polygon(shp_read, insurance, sum(amount, na.rm = TRUE))

## End(Not run)

spatialrisk documentation built on Nov. 10, 2021, 5:09 p.m.