Tibeuleu/FOC_Reduction
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

correction on principal angle computation

Browse Source
This commit is contained in:
Tibeuleu
2022-10-28 15:17:54 +02:00
parent 700cc7e4df
commit da805b71f1
27 changed files with 38 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/lib/plots.py
View File

@@ -51,12 +51,12 @@ from astropy.io import fits
def princ_angle(ang):
"""
Return the principal angle in the 0-180° quadrant.
Return the principal angle in the -180° to 180° quadrant.
"""
while ang < 0.:
ang += 180.
while ang <= -180.:
ang += 360.
while ang > 180.:
ang -= 180.
ang -= 360.
return ang
@@ -1808,8 +1808,8 @@ class pol_map(object):
P_reg = np.sqrt(Q_reg**2+U_reg**2)/I_reg
P_reg_err = np.sqrt((Q_reg**2*Q_reg_err**2 + U_reg**2*U_reg_err**2 + 2.*Q_reg*U_reg*QU_reg_err)/(Q_reg**2 + U_reg**2) + ((Q_reg/I_reg)**2 + (U_reg/I_reg)**2)*I_reg_err**2 - 2.*(Q_reg/I_reg)*IQ_reg_err - 2.*(U_reg/I_reg)*IU_reg_err)/I_reg
PA_reg = princ_angle((90./np.pi)*np.arctan2(U_reg,Q_reg))
PA_reg_err = (90./(np.pi*(Q_reg**2+U_reg**2)))*np.sqrt(U_reg**2*Q_reg_err**2 + Q_reg**2*U_reg_err**2 - 2.*Q_reg*U_reg*QU_reg_err)
PA_reg = np.degrees((1./2.)*np.arctan2(U_reg,Q_reg))
PA_reg_err = princ_angle(np.degrees((1./(2.*(Q_reg**2+U_reg**2)))*np.sqrt(U_reg**2*Q_reg_err**2 + Q_reg**2*U_reg_err**2 - 2.*Q_reg*U_reg*QU_reg_err)))
if hasattr(self, 'cont'):
for coll in self.cont.collections: