numpy.compress() in Python
Last Updated : 08 Mar, 2024
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The numpy.compress() function returns selected slices of an array along mentioned axis, that satisfies an axis.Python Output :
Syntax: numpy.compress(condition, array, axis = None, out = None)Parameters :
condition : [array_like]Condition on the basis of which user extract elements. Applying condition on input_array, if we print condition, it will return an arra filled with either True or False. Array elements are extracted from the Indices having True value. array : Input array. User apply conditions on input_array elements axis : [optional, int]Indicating which slice to select. By Default, work on flattened array[1-D] out : [optional, ndarray]Output_array with elements of input_array, that satisfies conditionReturn :
Copy of array with elements of input_array, that satisfies condition and along given axis
# Python Program illustrating
# numpy.compress method
import numpy as geek
array = geek.arange(10).reshape(5, 2)
print("Original array : \n", array)
a = geek.compress([0, 1], array, axis=0)
print("\nSliced array : \n", a)
a = geek.compress([False, True], array, axis=0)
print("\nSliced array : \n", a)
Original array : [[0 1] [2 3] [4 5] [6 7] [8 9]] Sliced array : [[2 3]] Sliced array : [[2 3]]Note : This codes won’t run on online-ID. Please run them on your systems to explore the working. .