Sort single column numpy arrays using another numpy array in Python

Question

Consider that I load columns from a text file using:

x, y, z = np.loadtxt(myfile, unpack=True)

What would be the syntax to sort x, y and z by increasing values of x ?

Francesco Montesano · Accepted Answer · 2013-05-07 09:27:30Z

2

You want to use numpy.argsort

argsortx = np.argsort(x)
x, y, z = x[argsortx], y[argsortx], z[argsortx]

answered May 7, 2013 at 9:27

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