What is the equivalent of MATLAB's repmat in NumPy

user_188912 0
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I would like to execute the equivalent of the following MATLAB code using NumPy: repmat([1; 1], [1 1 1]). How would I accomplish this?

matlab numpy python
7 Answers

Know both tile and repeat.

x = numpy.arange(5)
print numpy.tile(x, 2)
print x.repeat(2)
user_2083390

numpy.matlib has a repmat function with a similar interface as the matlab function

from numpy.matlib import repmat
repmat( np.array([[1],[1]]) , 1, 1)
user_6279110 
>>> import numpy as np

>>> np.repeat(['a','b'], [2,5])

array(['a', 'a', 'b', 'b', 'b', 'b', 'b'], dtype='<U1')

>>> np.repeat([1,2], [2,5])

array([1, 1, 2, 2, 2, 2, 2])

>>> np.repeat(np.array([1,2]), [3]).reshape(2,3)

array([[1, 1, 1],
       [2, 2, 2]])

>>> np.repeat(np.array([1,2]), [2,4]).reshape(3,2)

array([[1, 1],
       [2, 2],
       [2, 2]])

>>> np.repeat(np.matrix('1 2; 3 4'), [2]).reshape(4,2)

matrix([[1, 1],
        [2, 2],
        [3, 3],
        [4, 4]])
user_44015730
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