Put the sf lookalikes on the search path

Attaches the geoarrowrs versions of the sf functions sf does not make generic, such as st_distance() and st_within(), under sf's own names and argument names. Remove them again with detach("geoarrowrs:sf").

Usage

mask_sf()

Value

The attached environment, invisibly.

Details

You do not need it alongside sdf, which makes these functions generic and so reaches geoarrowrs by dispatch.

They take and return the GeoArrow representation rather than sfc, so they never convert anything into an sf object.

mask_sf() does not attach the generics, because masking one would shadow sf's own dispatch. Those generics have S3 methods on nanoarrow_vctr, which geoarrow_vctr extends, so st_area() and the rest already reach geoarrowrs through sf's generic whether or not you call mask_sf().

Examples

nc <- as.data.frame(read_shapefile(
  system.file("shape/nc.shp", package = "sf")
))
geom <- geoarrow::as_geoarrow_vctr(nc$geometry)

mask_sf()
as.vector(st_length(geom))[1:3]
#> Error in ga_length_euclidean(as_ga(x)): Invalid argument error: Extension type name mismatch: expected geoarrow.linestring, got geoarrow.multipolygon
as.vector(st_within(ga_centroid(geom), geom))[1:3]
#> <list_of<double>[3]>
#> [[1]]
#> [1] 1
#> 
#> [[2]]
#> [1] 2
#> 
#> [[3]]
#> [1] 3
#> 
detach("geoarrowrs:sf")