def _calc_snr(self, sig, var_sig):
'''A helper function used by calc_snr().'''
# pylint: disable-msg=R0201
if not Float.isNaN(sig) and not Float.isNaN(var_sig):
return sig / math.sqrt(var_sig)
else:
return Float.NaN
def _calc_var_sig(self, sig, h, lnA, r):
'''A helper function used by calc_snr().'''
self._update_progress()
if not Float.isNaN(r) and not Float.isNaN(lnA):
Es = self.eloss_post
return sig + h * calc_pow(Es, lnA, r)
else:
return Float.NaN
def _calc_var(self, lnA, r):
'''A helper function used by calc_vars().'''
self._update_progress()
if not Float.isNaN(lnA) and not Float.isNaN(r):
E1 = self.eloss_pre1
E2 = self.eloss_pre2
Es = self.eloss_post
q = (Es - 0.5 * (E1 + E2)) / (E2 - E1)
a01 = math.pow(Es / E1, -1 * r) * (q - 0.5)**2
a02 = math.pow(Es / E2, -1 * r) * (q + 0.5)**2
a11 = math.pow(Es / E1, -2 * r) * (q - 0.5)**2 *(q + 0.5)
a12 = math.pow(Es / E2, -2 * r) * (q - 0.5) *(q + 0.5)**2
return calc_pow(Es, lnA, r) * (a01 + a02 + (a11 + a12) / calc_pow(Es, lnA, r))
else:
return Float.NaN
def calc_sig(self, sig, lnA, r):
'''A helper function used by calc_map().'''
if not Float.isNaN(lnA) and not Float.isNaN(r) and sig > 0:
return float(sig) - calc_pow(self.eloss_post, lnA, r)
else:
return Float.NaN
def _calc_h(self, r, lnA, var):
'''A helper function used by calc_hs().'''
self._update_progress()
Es = self.eloss_post
if not Float.isNaN(lnA) and not Float.isNaN(r):
return 1 + (var / calc_pow(Es, lnA, r))
def format_for_nan(value):
if Float.isNaN(value):
return "NaN"
else:
return "%f" % value
def format_for_nan(value):
if Float.isNaN(value):
return "NaN"
else:
return "%f"%value
def format_for_nan(value):
if Float.isNaN(value) or value == -999.99:
return "NaN"
else:
return "%0.2f" % value
def format_for_nan(value):
if Float.isNaN(value) or value==-999.99:
return "NaN"
else:
return "%0.2f"%value