File:Mpl example polar plot.svg
Summary
| Description |
English: Logarithmic spiral with matplotlib |
| Date | |
| Source | Own work |
| Author | Adrien F. Vincent |
| SVG development |
Rationale: this work aims at providing an up-to-date version of the previous work https://commons.wikimedia.org/wiki/File:Logarithmic_Spiral_Pylab.svg , done by Morn the Gorn.
The matplotlib (mpl) version is 1.5.3, with Python 2.7 and numpy 1.10
Source code
This media was created with Matplotlib (comprehensive library for creating static, animated, and interactive visualizations in Python)Category:Images with Matplotlib source code and Python (general-purpose programming language)Category:Images with Python source code and NumPy (numerical programming package for the Python programming language)Category:Images with NumPy source code
Here is a listing of the source used to create this file.
Here is a listing of the source used to create this file.
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## Code for the figure
##########
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.ticker import NullFormatter # empty strings as tick labels
# Set up a figure with a polar projection
fig = plt.figure(figsize=(6, 6))
fig.clf()
ax = fig.add_subplot(1, 1, 1, polar=True)
# Plot a logarithmic spiral
t = np.arange(-4 * np.pi, 4 * np.pi, 0.1)
ax.plot(t, 1.19**t, linewidth=2) # one could also use `plt.polar`
# One wants a grid but without any tick label
ax.xaxis.set_major_formatter(NullFormatter())
ax.yaxis.set_major_formatter(NullFormatter())
ax.grid(True, ls='solid', color='0.75')
fig.savefig('logarithmic_spiral.svg')
plt.show()
##########
Licensing
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