File:Saddle Point between maxima.svg
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Size of this PNG preview of this SVG file: 575 × 449 pixels. Other resolutions: 307 × 240 pixels | 615 × 480 pixels | 769 × 600 pixels | 984 × 768 pixels | 1,280 × 1,000 pixels.
Original file (SVG file, nominally 575 × 449 pixels, file size: 352 KB)
Summary
| Description |
English: A saddle point, on the graph of the function
Español: Punto de silla en la función |
| Date | |
| Source | Own work |
| Author | Nicoguaro |
| SVG development |  This plot was created with Matplotlib. |
| Source code | Python codeimport numpy as np
from numpy import pi, sin, cos
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
plot_args = {'rstride': 1, 'cstride': 1, 'cmap':"Blues_r",
'linewidth': 0.4, 'antialiased': True,
'vmin': -1.5, 'vmax': 1.5}
x, y = np.mgrid[-6:2:31j, -2:6:31j]*pi
z = 0.5*cos(x/2) + sin(y/4)
ax.plot_surface(x, y/2, z, **plot_args)
ax.plot([-2*pi], [pi], [0.5], marker='o', mfc='w', mec='k', mew=1)
ax.view_init(azim=-60, elev=45)
ax.set_xlim(-6*pi, 2*pi)
ax.set_ylim(-pi, 3*pi)
ax.set_zlim(-2, 2)
plt.xticks([-6*pi, -2*pi, 2*pi],
[r"$-6\pi$", r"$-2\pi$", r"$2\pi$"])
plt.yticks([-pi, pi, 3*pi],
[r"$-2\pi$", r"$2\pi$", r"$6\pi$"])
ax.set_zticks([-2, 0, 2])
ax.set_zticklabels([r"$-2$", r"$0$", r"$2$"])
ax.w_xaxis.set_pane_color((1.0, 1.0, 1.0, 0.0))
ax.w_yaxis.set_pane_color((1.0, 1.0, 1.0, 0.0))
ax.w_zaxis.set_pane_color((1.0, 1.0, 1.0, 0.0))
ax.set_xlabel(r"$x$", fontsize=18)
ax.set_ylabel(r"$y$", fontsize=18)
ax.set_zlabel(r"$z$", fontsize=18)
plt.savefig("Saddle_Point.svg", bbox_inches="tight", transparent=True)
plt.show()
|
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution 4.0 International 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.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:52, 17 May 2016 | | 575 × 449 (352 KB) | Nicoguaro | User created page with UploadWizard |
File usage
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