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Discrete omega-damping plot and tweaks #193

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Merged
murrayrm merged 5 commits into from
Dec 28, 2018
Merged

Discrete omega-damping plot and tweaks #193

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dc8410c
Added discrete grid to pzmap function.
Feb 19, 2018
4117489
Revert "Added discrete grid to pzmap function."
Feb 19, 2018
f8c497e
Added discrete grid to pzmap function.
Feb 19, 2018
3d0bf03
Tweaked axis lines and zero/pole markers.
Feb 19, 2018
89dc937
Refactored sgrid based on matplotlib projections and moved sgrid and …
Mar 11, 2018
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Tweaked axis lines and zero/pole markers. 
(cherry picked from commit 382b4e9)
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Victor
Victor committed Feb 19, 2018
commit 3d0bf039c4715f2477b7fd7eccab00b3bf830639
8 changes: 4 additions & 4 deletions control/pzmap.py
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Expand Up @@ -112,14 +112,14 @@ def pzmap(sys, Plot=True, title='Pole Zero Map'):

# Plot the locations of the poles and zeros
if len(poles) > 0:
plt.scatter(real(poles), imag(poles), s=50, marker='x')
plt.scatter(real(poles), imag(poles), s=50, marker='x', facecolors='k')
if len(zeros) > 0:
plt.scatter(real(zeros), imag(zeros), s=50, marker='o',
facecolors='none')
facecolors='none', edgecolors='k')
# Add axes
#Somewhat silly workaround
plt.axhline(y=0, color='black')
plt.axvline(x=0, color='black')
plt.axhline(y=0, color='black', lw=1)
plt.axvline(x=0, color='black', lw=1)
plt.xlabel('Re')
plt.ylabel('Im')

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