Show expanded CRS arguments

Wrappers for sp::CRS and inla.CRS objects to handle the coordinate reference system argument string. These methods should no longer be used with PROJ6/rgdal3; see fm_wkt() and fm_proj4string() for a new approach.

Usage

fm_CRS_as_list(x, ...)

fm_list_as_CRS(x, ...)

fm_CRSargs(x, ...)

fm_list_as_CRSargs(x, ...)

fm_CRSargs_as_list(x, ...)

Arguments

x

An sp::CRS or inla.CRS object (for fm_CRSargs and fm_CRS_as_list), a character string (for fm_CRSargs_as_list), or a list (for fm_list_as_CRS and fm_list_as_CRSargs).

...

Additional arguments passed on to other methods.

Value

For fm_CRSargs and fm_list_as_CRSargs, a character string with PROJ.4 arguments.

For fm_CRS_as_list and fm_CRSargs_as_list, a list of name/value pairs.

For fm_list_as_CRS, a CRS or inla.CRS object.

For fm_list_as_CRSargs(), a CRS proj4 string for name=value pair list

For fm_CRSargs_as_list(), a list of name=value pairs from CRS proj4string

See also

fm_CRS()

Author

Finn Lindgren finn.lindgren@gmail.com

Examples

if (fm_safe_sp()) {
  crs0 <- fm_CRS("longlat_norm")
  p4s <- fm_proj4string(crs0)
  lst <- fm_CRSargs_as_list(p4s)
  crs1 <- fm_list_as_CRS(lst)
  lst$a <- 2
  crs2 <- fm_CRS(p4s, args = lst)
  print(fm_proj4string(crs0))
  print(fm_proj4string(crs1))
  print(fm_proj4string(crs2))
}
#> [1] "+proj=longlat +R=1 +no_defs"
#> [1] "+proj=longlat +R=1 +no_defs"
#> [1] "+proj=longlat +R=1 +no_defs"