Mandelbrot set: Difference between revisions
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Line 6,388:
plt.imshow(exit_times.T,
cmap=plt.cm.prism,
extent=(X.min(), X.max(), Y.min(), Y.max()))</lang>
</lang>▼
Actually the same, but a little tidier for teaching purposes.
<lang python>import numpy as np
import matplotlib.pyplot as plt
dots = 100
iterations = 50
x = np.linspace(-2.0, 1.0, 3 * dots + 1)
y = np.linspace(-1.0, 1.0, 2 * dots + 1)
A, B = np.meshgrid(x, y)
C = A + B * 1j
Z = np.zeros_like(C)
escape_radius = 2.1 # must be greater than 2
escape_table = np.zeros(Z.shape)
not_escaped = abs(Z) < escape_radius
for i in range(iterations):
Z[not_escaped] = Z[not_escaped] ** 2 + C[not_escaped]
not_escaped = abs(Z) < escape_radius
escape_table[not_escaped] = i + 1
fig, ax = plt.subplots(dpi = 150)
ax.imshow(escape_table, cmap=plt.cm.twilight_shifted)
▲plt.show()</lang>
=={{header|R}}==
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