24 lines
629 B
Python
24 lines
629 B
Python
import numpy as np
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def f(x, r):
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""" Compute the logistic map for a given value of x and r. """
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return r * x * (1 - x)
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def iterate_f(it, x0, r):
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""" Generate a population trajectory.
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Takes a number of iterations `it`, a starting value, x0,
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and a parameter value for r. It executes f repeatedly (it times),
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each time using the last result of f as the new input to f. Append each
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iteration's result to a list l. Finally, convert the list into a numpy
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array and return it.
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"""
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x = x0
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xs = [x0]
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for _ in range(it):
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x = f(x, r)
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xs.append(x)
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return np.array(xs)
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