vapour_crs_is_lonlat {vapour}

Is the CRS string representative of angular coordinates

Description

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

Usage

vapour_crs_is_lonlat(crs)

Arguments

crs

character string of length 1

Value

logical value TRUE for lonlat, FALSE otherwise

Examples

vapour_gdal_version() ## versions to catch problems with string input
vapour_proj_version()
vapour_crs_is_lonlat("+proj=aeqd +lon_0=147 +lat_0=-42")
vapour_crs_is_lonlat("EPSG:4326")
vapour_srs_wkt("+proj=laea")
vapour_crs_is_lonlat("+proj=laea +type=crs")
vapour_crs_is_lonlat("OGC:CRS84")
vapour_crs_is_lonlat("WGS84")
vapour_crs_is_lonlat("NAD27")
vapour_crs_is_lonlat("EPSG:3031")