Is the CRS string representative of angular coordinates

Returns TRUE if this is longitude latitude data. Missing, malformed, zero-length values are disallowed.

vapour_crs_is_lonlat(crs)

Arguments

crs

character string of length 1

Value

logical value TRUE for lonlat, FALSE otherwise

Examples

vapour_crs_is_lonlat("+proj=laea")
#> [1] FALSE
vapour_crs_is_lonlat("+proj=longlat")
#> [1] TRUE
vapour_crs_is_lonlat("+init=EPSG:4326")
#> [1] TRUE
vapour_crs_is_lonlat("OGC:CRS84")
#> [1] TRUE
vapour_crs_is_lonlat("WGS84")
#> [1] TRUE
vapour_crs_is_lonlat("NAD27")
#> [1] TRUE
vapour_crs_is_lonlat("EPSG:3031")
#> [1] FALSE