sf_project: directly transform a set of coordinates

In sf: Simple Features for R

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()
)

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.

Value

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

Examples

sf_add_proj_units()

sf documentation built on July 26, 2023, 5:22 p.m.