def __isub__(self, other):
"""self -= b
b is a pair of numbers (x, xerr_square) or another histogram
"""
data = self._data; errs = self._errors
if isNumberPair(other) and self.isunitless():
x, xerr = other
data -= x; errs += xerr
pass
elif isDimensionalPair(other):
x, xerr = other
data -= x; errs += xerr
pass
elif isHistogram(other):
data -= other._data; errs += other._errors
else:
raise NotImplementedError , "__sub__ is not defined for %s and %s" % (
self.__class__.__name__, other.__class__.__name__, )
return self
def __idiv__(self, other):
"""self /= b
b is a pair of numbers (x, xerr_square) or another histogram
"""
data = self._data; errs = self._errors
# sigmaA**2/B**2 + A**2*sigmaB**2/B**4
if isNumberPair(other):
y, dy2 = other
y, dy2 = float(y), float(dy2)
if dy2 == 0 or dy2 == 0.0: #special case
#ydx/y^2
self._setunit(1.*self.unit()/y)
return self
errs /= y*y
errs += dy2 * data * data / y**4
data /= y
pass
elif isDimensionalPair(other):
y, dy2 = other
unitlessother = 1, dy2/y/y
self._setunit( 1.*self.unit()/y )
self /= unitlessother
pass
elif isHistogram(other):
y = other._data; dy2 = other._errors
if dy2 == None: #special case
#ydx/y^2
errs /= y; errs /= y
data /= y
return self
errs /= y*y
errs += dy2 * data * data /y/y/y/y
data /= y
self._setunit( self.unit()/other.unit() )
else:
raise NotImplementedError , "__div__ is not defined for %s and %s. "\
"self=%s, other=%s" % (
self.__class__.__name__, other.__class__.__name__,
self, other)
self._syncUnit()
return self
def __iadd__(self, other):
"""self += b
b is a pair of numbers (x, xerr_square) or another histogram
"""
data = self._data; errs = self._errors
if isNumberPair(other) and self.isunitless():
x, xerr = other
data += x
errs += xerr
pass
elif isDimensionalPair( other ):
x, xerr = other
data += x
errs += xerr
pass
elif isHistogram(other):
data += other._data;
if errs is None:
if other._errors is not None:
self._dataCont.replaceDataset("error", other._errors.copy() )
pass
pass
else:
errs += other._errors
pass
pass
else:
raise NotImplementedError , "__add__ is not defined for %s and %s" % (
self.__class__.__name__, other.__class__.__name__, )
return self
def __imul__(self, other):
"""self *= b
b is a pair of numbers (x, xerr_square) or another histogram
"""
data = self._data; errs = self._errors
if isNumberPair(other) or isDimensionalPair(other):
y, dy2 = other
y, dy2 = float(y), float(dy2)
#B**2*sigmaA**2 + A**2*sigmaB**2
#term2 = dy2 * data * data
#term1 = errs * y * y
errs *= y*y
errs += dy2*data*data
data *= y
pass
elif isHistogram(other):
y = other.data(); dy2 = other.errors()
#
errs *= y*y
errs += dy2 * data*data
data *= y
self._setunit( self.unit() * other.unit() )
else:
raise NotImplementedError , "__mul__ is not defined for %s and %s" % (
self.__class__.__name__, other.__class__.__name__, )
self._syncUnit()
return self