How to plot a 3D density map in python with matplotlib

Thanks to mwaskon for suggesting the mayavi library. I recreated the density scatter plot in mayavi as follows: import numpy as np from scipy import stats from mayavi import mlab mu, sigma = 0, 0.1 x = 10*np.random.normal(mu, sigma, 5000) y = 10*np.random.normal(mu, sigma, 5000) z = 10*np.random.normal(mu, sigma, 5000) xyz = np.vstack([x,y,z]) kde = … Read more

How would one use Kernel Density Estimation as a 1D clustering method in scikit learn?

Write code yourself. Then it fits your problem best! Boilerplate: Never assume code you download from the net to be correct or optimal… make sure to fully understand it before using it. %matplotlib inline from numpy import array, linspace from sklearn.neighbors import KernelDensity from matplotlib.pyplot import plot a = array([10,11,9,23,21,11,45,20,11,12]).reshape(-1, 1) kde = KernelDensity(kernel=”gaussian”, bandwidth=3).fit(a) … Read more

How can I make a scatter plot colored by density in matplotlib?

In addition to hist2d or hexbin as @askewchan suggested, you can use the same method that the accepted answer in the question you linked to uses. If you want to do that: import numpy as np import matplotlib.pyplot as plt from scipy.stats import gaussian_kde # Generate fake data x = np.random.normal(size=1000) y = x * … Read more

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