def read(self, rast, mapset=None, mtype=None):
"""Read categories from a raster map
The category file for raster map name in mapset is read into the
cats structure. If there is an error reading the category file,
a diagnostic message is printed.
int Rast_read_cats(const char * name,
const char * mapset,
struct Categories * pcats
)
"""
if type(rast) == str:
mapname = rast
if mapset is None or mtype is None:
raise TypeError(_('Mapset and maptype must be specify'))
else:
mapname = rast.name
mapset = rast.mapset
mtype = rast.mtype
self.mtype = mtype
self.reset()
err = libraster.Rast_read_cats(mapname, mapset,
ctypes.byref(self._cats))
if err == -1:
raise GrassError("Can not read the categories.")
# copy from C struct to list
self._read_cats()
def read(self):
"""Read categories from a raster map
The category file for raster map name in mapset is read into the
cats structure. If there is an error reading the category file,
a diagnostic message is printed.
int Rast_read_cats(const char * name,
const char * mapset,
struct Categories * pcats
)
"""
self.reset()
err = libraster.Rast_read_cats(self.name, self.mapset,
ctypes.byref(self.c_cats))
if err == -1:
raise GrassError("Can not read the categories.")
# copy from C struct to list
self._read_cats()