Python | Numpy matrix.choose()
With the help of Numpy matrix.choose()
method, we can select the elements from a matrix by passing a parameter as an array which contain the index of row number to be selected. Output array having the same size as passed in the parameter.
Syntax : matrix.choose()
Return : Return an array of element choice
Example #1 :
In this example we can see that with the help of matrix.choose()
method we are able to extract an array of choices from matrix.
import numpy as np
gfg = np.matrix( '[1, 2, 3, 4; 3, 1, 5, 6]' )
geeks = np.choose([ 1 , 0 , 1 , 0 ], gfg)
print (geeks)
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Example #2 :
import numpy as np
gfg = np.matrix( '[1, 2, 3; 4, 5, 6; 7, 8, 9]' )
geeks = np.choose([ 2 , 0 , 1 ], gfg)
print (geeks)
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Last Updated :
10 Apr, 2019
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