numpy.around() in Python (original) (raw)

Last Updated : 08 Mar, 2024

numpy.around(arr, decimals = 0, out = None) : This mathematical function helps user to evenly round array elements to the given number of decimals.

Parameters :

array : [array_like] Input array.
decimal : [int, optional] Decimal places we want to round off.

Default = 0. In case of -ve decimal, it specifies the n0. of positions to the left of the decimal point.

out : [optional] Output resulted array

Return :

An array with all array elements being rounded off, having same type as input

Code #1 : Working

import numpy as np

in_array = [. 5 , 1.5 , 2.5 , 3.5 , 4.5 , 10.1 ]

print ( "Input array : \n" , in_array)

round_off_values = np.around(in_array)

print ( "\nRounded values : \n" , round_off_values)

in_array = [. 53 , 1.54 , . 71 ]

print ( "\nInput array : \n" , in_array)

round_off_values = np.around(in_array)

print ( "\nRounded values : \n" , round_off_values)

in_array = [. 5538 , 1.33354 , . 71445 ]

print ( "\nInput array : \n" , in_array)

round_off_values = np.around(in_array, decimals = 3 )

print ( "\nRounded values : \n" , round_off_values)

Output :

Input array : [0.5, 1.5, 2.5, 3.5, 4.5, 10.1]

Rounded values : [ 0. 2. 2. 4. 4. 10.]

Input array : [0.53, 1.54, 0.71]

Rounded values : [ 1. 2. 1.]

Input array : [0.5538, 1.33354, 0.71445]

Rounded values : [ 0.554 1.334 0.714]

Code 2 : Working

import numpy as np

in_array = [ 1 , 4 , 7 , 9 , 12 ]

print ( "Input array : \n" , in_array)

round_off_values = np.around(in_array)

print ( "\nRounded values : \n" , round_off_values)

in_array = [ 133 , 344 , 437 , 449 , 12 ]

print ( "\nInput array : \n" , in_array)

round_off_values = np.around(in_array, decimals = - 2 )

print ( "\nRounded values upto 2: \n" , round_off_values)

in_array = [ 133 , 344 , 437 , 449 , 12 ]

print ( "\nInput array : \n" , in_array)

round_off_values = np.around(in_array, decimals = - 3 )

print ( "\nRounded values upto 3: \n" , round_off_values)

Output :

Input array : [1, 4, 7, 9, 12]

Rounded values : [ 1 4 7 9 12]

Input array : [133, 344, 437, 449, 12]

Rounded values upto 2: [100 300 400 400 0]

Input array : [133, 344, 437, 449, 12]

Rounded values upto 3: [0 0 0 0 0]