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ispex2_error.py
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ispex2_error.py
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import pol
import numpy as np
from matplotlib import pyplot as plt
import spex
import spex_errors as spex_E
from sys import argv
Q_in = float(argv[1])
try:
U_in = float(argv[2])
except:
U_in = 0.
wavelengths = np.arange(450, 700, 0.3)
source = pol.Stokes_nm(np.ones_like(wavelengths), Q_in, U_in, 0.)
D = "\u0394"
a = "\u03B1"
def _lims(ax, ax2, x):
ax.set_xlim(x.min(), x.max())
ax.set_ylim(-0.01, 1.01)
ax2.set_ylim(-91.8, 91.8)
def _ticks(ax, ax2):
ax.set_yticks([0, 0.25, 0.5, 0.75, 1.0], minor=True)
ax.set_yticks(np.arange(0, 1.1, 0.1), minor=False)
ax.tick_params(axis="y", which="minor", length=0)
ax2.set_yticks(np.arange(-90, 90+15, 15))
ax.yaxis.grid(True, which="minor")
ax.xaxis.grid(True)
def plot_dolp_aolp(x, DoLPs, AoLPs, xlabel, title="Solid: DoLP ; Dashed: AoLP"):
fig, ax = plt.subplots(figsize=(6,4), tight_layout=True)
ax2 = ax.twinx()
ax.plot(x, DoLPs, c='k')
ax2.plot(x, AoLPs, c='k', ls="--")
_lims(ax , ax2, x)
_ticks(ax, ax2)
ax.set_xlabel(xlabel)
ax.set_ylabel("DoLP")
ax2.set_ylabel("AoLP (degrees)")
ax.set_title(title)
return fig
def _lims2(ax, ax2, x):
ax.set_xlim(x.min(), x.max())
ax.set_ylim(-0.12, 0.12)
ax2.set_ylim(-20, 20)
def _ticks2(ax, ax2):
ax.set_yticks(np.arange(-0.12, 0.14, 0.03), minor=False)
ax.tick_params(axis="y", which="minor", length=0)
ax2.set_yticks(np.arange(-20, 25, 5))
ax.yaxis.grid(True, which="major")
ax.xaxis.grid(True)
def plot_errors(x, DoLPs, AoLPs, real_DoLP, real_AoLP, xlabel, Dlim=0.03):
fig, ax = plt.subplots(figsize=(6,4), tight_layout=True)
ax2 = ax.twinx()
Derr = spex_E.D_err(DoLPs, real_DoLP)
Aerr = spex_E.A_err(AoLPs, real_AoLP)
ax.plot(x, Derr, c='k')
ax.axhspan(-Dlim, Dlim, color='0.5', alpha=0.5)
ax2.plot(x, Aerr, c='k', ls="--")
_lims2(ax , ax2, x)
_ticks2(ax, ax2)
ax.set_xlabel(xlabel)
ax.set_ylabel("DoLP Error (%)")
ax2.set_ylabel("AoLP Error (degrees)")
title = f"Margin: {spex_E.margin(x, DoLPs, AoLPs, real_DoLP, real_AoLP):.1f}"
ax.set_title(title)
return fig
I0, I90 = spex.simulate_iSPEX2(wavelengths, source)
DoLP_real = pol.DoLP(*source[0]) ; AoLP_real = pol.AoLP_deg(*source[0])
print(f"Real: DoLP = {DoLP_real:.2f}, AoLP = {AoLP_real:.1f} degrees")
DoLP0 , AoLP0 = spex.retrieve_DoLP(wavelengths, source, I0 )
DoLP90, AoLP90 = spex.retrieve_DoLP(wavelengths, source, I90)
AoLP90 = spex._correct_AoLP90(AoLP90)
print(f"+Q: DoLP = {DoLP0 :.2f}, AoLP = {AoLP0 :.1f} degrees")
print(f"-Q: DoLP = {DoLP90:.2f}, AoLP = {AoLP90:.1f} degrees")
title = f"DoLP (solid, {DoLP_real:.2f}) and AoLP (dashed, {AoLP_real:.1f})"
print("Simulated ideal conditions")
QWP_ds = np.linspace(-20, 20, 100)
I0, I90 = spex.simulate_iSPEX2_error(wavelengths, source, "QWP_d", QWP_ds)
print(f"Simulated QWP {D}d")
DoLPs, AoLPs = spex.retrieve_DoLP_many2(wavelengths, source, I0, I90)
fig = plot_dolp_aolp(QWP_ds, DoLPs, AoLPs, r"$\Delta d$ on QWP (nm)", title=title)
plt.show()
fig = plot_errors(QWP_ds, DoLPs, AoLPs, DoLP_real, AoLP_real, r"$\Delta d$ on QWP (nm)")
fig.savefig(f"single_margin_Q{Q_in:.1f}_U{U_in:.1f}_QWPd.png")
plt.show()
QWP_ts = np.linspace(-25, 25, 100)
I0, I90 = spex.simulate_iSPEX2_error(wavelengths, source, "QWP_t", QWP_ts)
print(f"Simulated QWP {D}{a}")
DoLPs, AoLPs = spex.retrieve_DoLP_many2(wavelengths, source, I0, I90)
fig = plot_dolp_aolp(QWP_ts, DoLPs, AoLPs, r"$\Delta \alpha$ on QWP (degrees)", title=title)
plt.show()
fig = plot_errors(QWP_ts, DoLPs, AoLPs, DoLP_real, AoLP_real, r"$\Delta \alpha$ on QWP (degrees)")
fig.savefig(f"single_margin_Q{Q_in:.1f}_U{U_in:.1f}_QWPt.png")
plt.show()
MOR1_ds = np.linspace(-150, 150, 150)
I0, I90 = spex.simulate_iSPEX2_error(wavelengths, source, "MOR1_d", MOR1_ds)
print(f"Simulated MOR 1 {D}d")
DoLPs, AoLPs = spex.retrieve_DoLP_many2(wavelengths, source, I0, I90)
fig = plot_dolp_aolp(MOR1_ds, DoLPs, AoLPs, r"$\Delta d$ on MOR 1 (nm)", title=title)
plt.show()
fig = plot_errors(MOR1_ds, DoLPs, AoLPs, DoLP_real, AoLP_real, r"$\Delta d$ on MOR 1 (nm)")
fig.savefig(f"single_margin_Q{Q_in:.1f}_U{U_in:.1f}_MOR1d.png")
plt.show()
MOR1_ts = np.linspace(-25, 25, 100)
I0, I90 = spex.simulate_iSPEX2_error(wavelengths, source, "MOR1_t", MOR1_ts)
print(f"Simulated MOR 1 {D}{a}")
DoLPs, AoLPs = spex.retrieve_DoLP_many2(wavelengths, source, I0, I90)
fig = plot_dolp_aolp(MOR1_ts, DoLPs, AoLPs, r"$\Delta \alpha$ on MOR 1 (degrees)", title=title)
plt.show()
fig = plot_errors(MOR1_ts, DoLPs, AoLPs, DoLP_real, AoLP_real, r"$\Delta \alpha$ on MOR 1 (degrees)")
fig.savefig(f"single_margin_Q{Q_in:.1f}_U{U_in:.1f}_MOR1t.png")
plt.show()
POL_ts = np.linspace(-15, 15, 100)
I0, I90 = spex.simulate_iSPEX2_error(wavelengths, source, "POL0_t", POL_ts)
print(f"Simulated POL0 {D}{a}")
DoLPs, AoLPs = spex.retrieve_DoLP_many2(wavelengths, source, I0, I90)
fig = plot_dolp_aolp(POL_ts, DoLPs, AoLPs, r"$\Delta \alpha$ on POL0 (degrees)", title=title)
plt.show()
fig = plot_errors(POL_ts, DoLPs, AoLPs, DoLP_real, AoLP_real, r"$\Delta \alpha$ on POL0 (degrees)")
fig.savefig(f"single_margin_Q{Q_in:.1f}_U{U_in:.1f}_POL0t.png")
plt.show()
I0, I90 = spex.simulate_iSPEX2_error(wavelengths, source, "POL90_t", POL_ts)
print(f"Simulated POL90 {D}{a}")
DoLPs, AoLPs = spex.retrieve_DoLP_many2(wavelengths, source, I0, I90)
fig = plot_dolp_aolp(POL_ts, DoLPs, AoLPs, r"$\Delta \alpha$ on POL90 (degrees)", title=title)
plt.show()
fig = plot_errors(POL_ts, DoLPs, AoLPs, DoLP_real, AoLP_real, r"$\Delta \alpha$ on POL90 (degrees)")
fig.savefig(f"single_margin_Q{Q_in:.1f}_U{U_in:.1f}_POL90t.png")
plt.show()