File:Example of a locally constant function with sgn(x).svg

Summary

Description
English: This diagram shows that the function is locally constant, i.e. for each argument there is a neighborhood where the function is constant.
Date
Source Own work
Author Stephan Kulla (User:Stephan Kulla)
SVG development
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Source code
InfoField

Python code

import matplotlib.pyplot as plt

from mpl_toolkits.axes_grid1.inset_locator import zoomed_inset_axes, mark_inset

b = 4

f, ax = plt.subplots()

ax.axhline(color="black")
ax.axvline(color="black")

ax.set_xlim(-b,b)
ax.set_ylim(-2,2)

ax.plot([-b,0],[-1,-1], color="blue")
ax.plot([0,b],[1,1], color="blue")
ax.plot([0.15],[1],".",color="green")
ax.plot([0,0],[1,-1], "o", color="white")

axins = zoomed_inset_axes(ax,10,loc=4)
axins.plot([0.05,0.25],[1,1], color="blue")
axins.plot([0.15],[1],"o",color="green")
axins.set_xlim(0.05,0.25)
axins.set_ylim(0.95,1.05)

mark_inset(ax, axins, loc1=3, loc2=1, fc="0.95", ec="0.7")

plt.xticks(visible=False)
plt.yticks(visible=False)

plt.savefig("Example of a local constant function with sgn(x).svg")

Licensing

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The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

Category:CC-Zero#Example%20of%20a%20locally%20constant%20function%20with%20sgn(x).svg
Category:Self-published work Category:Signum function Category:Basics of topology
Category:Basics of topology Category:CC-Zero Category:Self-published work Category:Signum function Category:Valid SVG created with Matplotlib code