choropleth_sf: Create choropleth simple feature object from points

In MHaringa/nlmaps: Choropleth maps

Description

Create choropleth simple feature object from points.

Usage

choropleth_sf(sf_map, df, oper, crs = 4326)

Arguments

sf_map	Simple features object. Note that shapefiles consist of more than one file, all with identical basename, which should reside in the same directory.
df	Data.frame of interest. The data.frame should contain the column names 'lon' and 'lat'
oper	An operation on the polygon level.
crs	Coordinate reference system: integer with the EPSG code, or character with proj4string

Value

standard feature object

Author(s)

Martin Haringa

Examples

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

## End(Not run)

MHaringa/nlmaps documentation built on May 19, 2019, 9:40 p.m.