smart_as_sf {smartmap}

Smartly convert an object to a simple features data frame

Description

Converts R objects to sf::sf objects, but supports a wider range of input data than sf::st_as_sf.

Usage

smart_as_sf(x, ...)

## Default S3 method:
smart_as_sf(x, ...)

## S3 method for class 'data.frame'
smart_as_sf(x, ...)

## S3 method for class 'character'
smart_as_sf(x, ...)

Arguments

x

any of the following:

• a matrix: Either a matrix with named longitude and latitude columns or an unnamed two column matrix containing longitude and latitude (in that order)

• a data.frame with named longitude and latitude columns

• an sf::sfc_POINT object

• a named or unnamed numeric vector of length 2 containing a single longitude-latitude coordinate pair

• a character scalar path or URL to a shapefile or zipped shapefile

...

ignored

Value

an sf::sf data.frame

Note

smart_as_sf.default() looks if an sf::st_as_sf(), sf::st_as_sfc() or as_coord_matrix() method exists for x (in that order). If you are a package developer and want to support smartmap for a custom S3 class in your package, it is enough to provide one of these methods.

Examples

smart_as_sf(data.frame(lat = c(1,2,3), longitude = c(3,4,5)))
smart_as_sf(c(1, 2))