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in nyquist plots, draw contour at specified magnitude if threshold is exceeded #671

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sawyerbfuller wants to merge 6 commits into from
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in nyquist plots, draw contour at specified magnitude if threshold is exceeded #671

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5a5ca77
nyquist plot above a certain radius is also plotted at specfied infin…
sawyerbfuller Nov 21, 2021
c008083
improve terminology and docstring
sawyerbfuller Nov 21, 2021
5b047f7
fix error when no large contours
sawyerbfuller Nov 21, 2021
372efb4
bugfixes
sawyerbfuller Nov 21, 2021
23b3e8c
new indent code that adds a consistent number of points at every inde…
sawyerbfuller Nov 22, 2021
5e9b179
rename keyword to plot_maximum_magintude and option to turn it off by…
sawyerbfuller Nov 23, 2021
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bugfixes
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@sawyerbfuller
sawyerbfuller committed Nov 21, 2021
commit 372efb4ac0ea07c3c550ecc09e0e6676b9afe944
4 changes: 2 additions & 2 deletions control/freqplot.py
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Expand Up @@ -522,7 +522,7 @@ def gen_zero_centered_series(val_min, val_max, period):
'nyquist.mirror_style': '--',
'nyquist.arrows': 2,
'nyquist.arrow_size': 8,
'nyquist.indent_radius': 1e-3,
'nyquist.indent_radius': 1e-2,
'nyquist.maximum_magnitude': 5,
'nyquist.indent_direction': 'right',
}
Expand Down Expand Up @@ -899,7 +899,7 @@ def _add_arrows_to_line2D(
raise ValueError("expected a matplotlib.lines.Line2D object")
x, y = line.get_xdata(), line.get_ydata()
x, y = x[np.isfinite(x)], y[np.isfinite(x)]
if len(x) == 0:
if len(x) in (0, 1):
return []
arrow_kw = {
"arrowstyle": arrowstyle,
Expand Down