sf (version 1.0-16)

sf_project: directly transform a set of coordinates

Description

directly transform a set of coordinates

Usage

sf_add_proj_units()
sf_project(
  from = character(0),
  to = character(0),
  pts,
  keep = FALSE,
  warn = TRUE,
  authority_compliant = st_axis_order()
)

Value

two-column numeric matrix with transformed/converted coordinates, returning invalid values as Inf

Arguments

from

character description of source CRS, or object of class crs, or pipeline describing a transformation

to

character description of target CRS, or object of class crs

pts

two-, three- or four-column numeric matrix, or object that can be coerced into a matrix; columns 3 and 4 contain z and t values.

keep

logical value controlling the handling of unprojectable points. If keep is TRUE, then such points will yield Inf or -Inf in the return value; otherwise an error is reported and nothing is returned.

warn

logical; if TRUE, warn when non-finite values are generated

authority_compliant

logical; TRUE means handle axis order authority compliant (e.g. EPSG:4326 implying x=lat, y=lon), FALSE means use visualisation order (i.e. always x=lon, y=lat)

Details

sf_add_proj_units loads the PROJ units link, us_in, ind_yd, ind_ft, and ind_ch into the udunits database, and returns TRUE invisibly on success.

Examples

sf_add_proj_units()