[Matplotlib-users] How to draw circles in logscale plots

[LowDepth]

Hello,

how can I plot circles or other shapes in plots which have logarithmic axis?
I have a grid of 3 plots and want to plot some kind of sketches in the lower
right corner of
each subplot. How should I do that?

import numpy as np
from matplotlib import pyplot as plt
from matplotlib import gridspec

fig = plt.figure(figsize=(6, 10))
gs = gridspec.GridSpec(3, 1, height_ratios=[1.5, 1, 1])#, height_ratios=[2,
1, 1])
ax0 = plt.subplot(gs[0])
ax1 = plt.subplot(gs[1])
ax2 = plt.subplot(gs[2])
plt.setp(ax_new.get_yticklabels(), visible=False)
plt.setp(ax_new.get_xticklabels(), visible=False)
ax_new = fig.add_axes([0,0,1,1], frameon=False,aspect="equal")
ax_new.axes.get_yaxis().set_visible(False)
ax_new.axes.get_xaxis().set_visible(False)
circle1=plt.Circle((0.2,0.0),0.05, color="0.8")
circle2=plt.Circle((0.4,0.0),0.05, color="0.8")
ax_new.add_artist(circle1)
ax_new.add_artist(circle2)

ax0.semilogx(x,x**2, "k-", linewidth=2)
ax1.semilogx(x,x**3, "k--", linewidth=2)
ax2.semilogx(x,np.exp(-x)+x**4, "k-.", linewidth=2)
plt.tight_layout()
plt.show()



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[Benjamin Root]

A quick-n-dirty way would be to use markers via the scatter() function.
Just set the facecolor to 'none', and some very large markersize value.

Ben Root

Post by LowDepth
Hello,
how can I plot circles or other shapes in plots which have logarithmic axis?
I have a grid of 3 plots and want to plot some kind of sketches in the lower
right corner of
each subplot. How should I do that?
import numpy as np
from matplotlib import pyplot as plt
from matplotlib import gridspec
fig = plt.figure(figsize=(6, 10))
gs = gridspec.GridSpec(3, 1, height_ratios=[1.5, 1, 1])#, height_ratios=[2,
1, 1])
ax0 = plt.subplot(gs[0])
ax1 = plt.subplot(gs[1])
ax2 = plt.subplot(gs[2])
plt.setp(ax_new.get_yticklabels(), visible=False)
plt.setp(ax_new.get_xticklabels(), visible=False)
ax_new = fig.add_axes([0,0,1,1], frameon=False,aspect="equal")
ax_new.axes.get_yaxis().set_visible(False)
ax_new.axes.get_xaxis().set_visible(False)
circle1=plt.Circle((0.2,0.0),0.05, color="0.8")
circle2=plt.Circle((0.4,0.0),0.05, color="0.8")
ax_new.add_artist(circle1)
ax_new.add_artist(circle2)
ax0.semilogx(x,x**2, "k-", linewidth=2)
ax1.semilogx(x,x**3, "k--", linewidth=2)
ax2.semilogx(x,np.exp(-x)+x**4, "k-.", linewidth=2)
plt.tight_layout()
plt.show()
--
http://matplotlib.1069221.n5.nabble.com/How-to-draw-circles-in-logscale-plots-tp45367.html
Sent from the matplotlib - users mailing list archive at Nabble.com.
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