def from_user_input(cls, value, morph_from_esri_dialect=False):
"""Make a CRS from various input
Dispatches to from_epsg, from_proj, or from_string
Parameters
----------
value : obj
A Python int, dict, or str.
morph_from_esri_dialect : bool, optional
If True, items in the input using Esri's dialect of WKT
will be replaced by OGC standard equivalents.
Returns
-------
CRS
"""
if isinstance(value, cls):
return value
elif isinstance(value, int):
return cls.from_epsg(value)
elif isinstance(value, dict):
return cls(**value)
elif isinstance(value, string_types):
obj = cls()
obj._crs = _CRS.from_user_input(
value, morph_from_esri_dialect=morph_from_esri_dialect)
return obj
else:
raise CRSError("CRS is invalid: {!r}".format(value))
def from_user_input(cls, value, morph_from_esri_dialect=False):
"""Make a CRS from various input
Dispatches to from_epsg, from_proj, or from_string
Parameters
----------
value : obj
A Python int, dict, or str.
morph_from_esri_dialect : bool, optional
If True, items in the input using Esri's dialect of WKT
will be replaced by OGC standard equivalents.
Returns
-------
CRS
"""
if isinstance(value, cls):
return value
elif isinstance(value, int):
return cls.from_epsg(value)
elif isinstance(value, dict):
return cls(**value)
elif isinstance(value, string_types):
obj = cls()
obj._crs = _CRS.from_user_input(value, morph_from_esri_dialect=morph_from_esri_dialect)
return obj
else:
raise CRSError("CRS is invalid: {!r}".format(value))
def from_string(cls, string, morph_from_esri_dialect=False):
"""Make a CRS from an EPSG, PROJ, or WKT string
Parameters
----------
string : str
An EPSG, PROJ, or WKT string.
morph_from_esri_dialect : bool, optional
If True, items in the input using Esri's dialect of WKT
will be replaced by OGC standard equivalents.
Returns
-------
CRS
"""
try:
string = string.strip()
except AttributeError:
pass
if not string:
raise CRSError("CRS is empty or invalid: {!r}".format(string))
elif string.upper().startswith('EPSG:'):
auth, val = string.split(':')
if not val:
raise CRSError("Invalid CRS: {!r}".format(string))
return cls.from_epsg(val)
elif string.startswith('{') or string.startswith('['):
# may be json, try to decode it
try:
val = json.loads(string, strict=False)
except ValueError:
raise CRSError('CRS appears to be JSON but is not valid')
if not val:
raise CRSError("CRS is empty JSON")
else:
return cls.from_dict(**val)
elif string.endswith("]"):
return cls.from_wkt(
string, morph_from_esri_dialect=morph_from_esri_dialect)
elif "=" in string:
return cls.from_proj4(string)
obj = cls()
obj._crs = _CRS.from_user_input(
string, morph_from_esri_dialect=morph_from_esri_dialect)
return obj
