from scipy.stats import uniform import matplotlib.pyplot as plt fig, ax = plt.subplots(1, 1) # Calculate a few first moments: mean, var, skew, kurt = uniform.stats(moments='mvsk') # Display the probability density function (``pdf``): x = np.linspace(uniform.ppf(0.01), uniform.ppf(0.99), 100) ax.plot(x, uniform.pdf(x), 'r-', lw=5, alpha=0.6, label='uniform pdf') # Alternatively, the distribution object can be called (as a function) # to fix the shape, location and scale parameters. This returns a "frozen" # RV object holding the given parameters fixed. # Freeze the distribution and display the frozen ``pdf``: rv = uniform() ax.plot(x, rv.pdf(x), 'k-', lw=2, label='frozen pdf') # Check accuracy of ``cdf`` and ``ppf``: vals = uniform.ppf([0.001, 0.5, 0.999]) np.allclose([0.001, 0.5, 0.999], uniform.cdf(vals)) # True # Generate random numbers: r = uniform.rvs(size=1000) # And compare the histogram: ax.hist(r, normed=True, histtype='stepfilled', alpha=0.2) ax.legend(loc='best', frameon=False) plt.show()