Tibeuleu/FOC_Reduction
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make use of existing scipy.special.gammaincc function for emission_center script

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Thibault Barnouin
2025-02-13 17:09:14 +01:00
parent 56f963ac7d
commit 450c9f3e59
2 changed files with 15 additions and 10 deletions
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8
package/lib/utils.py
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@@ -88,8 +88,8 @@ def CenterConf(mask, PA, sPA):
2D matrix of same shape as input containing the confidence on the polarization
computation between 0 and 1 for 2 parameters of interest (Q and U Stokes fluxes).
"""
chi2 = np.full(PA.shape, np.nan)
conf = np.full(PA.shape, -1.0)
chi2 = np.full(PA.shape, np.nan, dtype=np.float64)
conf = np.full(PA.shape, -1.0, dtype=np.float64)
yy, xx = np.indices(PA.shape)
def ideal(c):
@@ -105,9 +105,9 @@ def CenterConf(mask, PA, sPA):
chi2[y, x] = chisq((x, y))
from scipy.optimize import minimize
from scipy.special import gammainc
from scipy.special import gammaincc
conf[np.isfinite(PA)] = 1.0 - gammainc(0.5, 0.5 * chi2[np.isfinite(PA)])
conf[np.isfinite(PA)] = gammaincc(0.5, 0.5 * chi2[np.isfinite(PA)])
c0 = np.unravel_index(np.argmax(conf), conf.shape)[::-1]
result = minimize(chisq, c0, bounds=[(0, PA.shape[1]), (0.0, PA.shape[0])])
if result.success: