directly transform a set of coordinates
sf_add_proj_units() sf_project( from = character(0), to = character(0), pts, keep = FALSE, warn = TRUE, authority_compliant = st_axis_order() )
character description of source CRS, or object of class
character description of target CRS, or object of class
two-column numeric matrix, or object that can be coerced into a matrix
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.
two-column numeric matrix with transformed/converted coordinates, returning invalid values as
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.