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File:Saddle Point SVG.svg

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Original file (SVG file, nominally 720 × 540 pixels, file size: 865 KB)

Summary

Description
English: SVG version of the illustration of saddle point.
Date
Source Own work
Author IkamusumeFan
SVG development
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The SVG code is valid.
 
This plot was created with Matplotlib.
Source code
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Python code

# Author: Ika, 2013-07-26
from mpl_toolkits.mplot3d import Axes3D
from matplotlib import cm
from matplotlib.ticker import LinearLocator, FormatStrFormatter
import matplotlib.pyplot as plt
import numpy as np

fig = plt.figure()
ax = fig.gca(projection='3d')
ax.set_xlabel('x')
ax.set_ylabel('y')
# Prepare the data to plot
X = np.arange(-8, 8, 0.5)
Y = np.arange(-8, 8, 0.5)
X, Y = np.meshgrid(X, Y)
Z = X*X - Y*Y
# Plot the surface
surf = ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.jet, linewidth=0, antialiased=False)

# Plot the saddle point
x=y=z=np.arange(-0.1,0.1,0.1)
ax.plot(x, y, z, 'r+', linewidth=1)
ax.text(-2,0,2,r'(0,0,0)',fontsize=20)

fig.colorbar(surf, shrink=0.5, aspect=5)

# Save the figure to the output SVG file
plt.savefig("Saddle_Point_SVG.svg");

Licensing

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

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26 July 2013

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Date/TimeThumbnailDimensionsUserComment
current15:44, 26 July 2013Thumbnail for version as of 15:44, 26 July 2013720 × 540 (865 KB)IkamusumeFanUser created page with UploadWizard

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