def __getattr__(self, name):
try:
return self[name]
except KeyError:
if name == _name_:
return _NamedDict.name.fget(self)
raise _AttributeError(item=self._dot_(name), txt=_doesn_t_exist_)
def vwr(self, attr):
'''Return the Visvalingam-Whyatt results, optionally
including the triangular area (in meters) as
attribute attr to each simplified point.
'''
pts, r = self.pts, self.r
# double check the minimal triangular area
assert min(t2.h2 for t2 in r) > self.s2 > 0
if attr: # return the trangular area (actually
# the sqrt of double the triangular area)
# converted back from degrees to meter
if isNumpy2(pts):
raise _AttributeError(attr=attr)
m = radians(_1_0) * self.radius
r[0].h2 = r[-1].h2 = 0 # zap sentinels
for t2 in r: # convert back to meter
setattr(pts[t2.ix], attr, sqrt(t2.h2) * m)
# double check for duplicates
n = len(r)
r = dict((t2.ix, True) for t2 in r)
assert len(r) == n
return self.points(r)
def _immutable(inst, value):
'''Throws an C{AttributeError}, always.
'''
from pygeodesy.named import classname
s = _DOT_(repr(inst), self.name)
s = _EQUALSPACED_(s, repr(value))
t = _SPACE_(_immutable_, classname(self))
raise _AttributeError(s, txt=t)
def __getattr__(self, name):
'''Get the value of an attribute or enum by B{C{name}}.
'''
try:
return self[name]
except KeyError:
if name == _name_:
return _NamedDict.name.fget(self)
raise _AttributeError(item=self._DOT_(name), txt=_doesn_t_exist_)
def _boolkwds(inst, **name_value_pairs): # in .frechet, .hausdorff, .heights
'''(INTERNAL) Set applicable C{bool} properties/attributes.
'''
for n, v in name_value_pairs.items():
b = getattr(inst, n, None)
if b is None: # invalid bool attr
t = _SPACE_(_EQUAL_(n, repr(v)), 'for',
inst.__class__.__name__) # XXX .classname
raise _AttributeError(t, txt=_not_('applicable'))
if v in (False, True) and v != b:
setattr(inst, NN(_UNDER_, n), v)
def _getattr(o, a):
if hasattr(o, a):
return getattr(o, a)
raise _AttributeError(Fmt.DOT(a), o)
def _getattr(o, a):
if hasattr(o, a):
return getattr(o, a)
raise _AttributeError('.%s' % (a, ), o)
def immutable(inst, value):
'''Throws an C{AttributeError}, always.
'''
t = immutable.__name__, inst, method.__name__, value
raise _AttributeError('%s property: %r.%s = %r' % t)
def __getattr__(self, attr):
try:
return self[attr]
except KeyError: # PYCHOK no cover
from pygeodesy.errors import _AttributeError
raise _AttributeError(self._DOT_(attr), txt=_doesn_t_exist_)
