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| import numpy as np | |
| import pylab as pl | |
| x = np.random.uniform(1, 100, 1000) | |
| y = np.log(x) + np.random.normal(0, .3, 1000) | |
| pl.scatter(x, y, s=1, label="log(x) with noise") | |
| pl.plot(np.arange(1, 100), np.log(np.arange(1, 100)), c="b", label="log(x) true function") | |
| pl.xlabel("x") | |
| pl.ylabel("f(x) = log(x)") | |
| pl.legend(loc="best") | |
| pl.title("A Basic Log Function") | |
| pl.show() |
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