numpy.isneginf () in Python



Parameters:

  array:  [array_like] Input array or object whose elements, we need to test for infinity.  y:  [array_like] A boolean array with the same shape and type as x to store the result. 

Return:

 boolean array containing the result. For scalar input, the result is a new boolean with value True if the input is positive or negative infinity; otherwise the value is False. For array input, the result is a boolean array with the same shape as the input and the values ​​are True where the corresponding element of the input is positive or negative infinity; elsewhere the values ​​are False. 

Code 1:

# Python program illustrating
# numpy.isneginf () method

 

import numpy as geek 

  

print ( "Negative:" , geek.isneginf ( 1 ), "" )

 

print ( "Negative:" , geek.isneginf ( 0 ), " " )

  
# not a number

print ( "Negative : " , geek.isneginf (geek.nan), " " )

 
# infinity

print ( "Negative:" , geek.isneginf (geek.inf), "" )

 

print ( " Negative: " , geek.isneginf (geek.NINF), " "

 

x = geek.array ([ - geek.inf, 0. , geek .inf])

y = geek .array ([ 2 , 2 , 2 ])

print ( " Checking for negativity: " , geek.isneginf (x, y)) 

Exit:

 Negative: False Negative: False Negative: False Negative: False Negative: True Checking for negativity: [1 0 0] 

Code 2:

# Python program illustrating
# numpy.isneginf () method

 

import numpy as geek 

 
# Returns True / False for each element

b = geek.arange ( 18 ). reshape ( 3 , 6 )

 

print ( " " , b)

print ( " Is Negat ive Infifnity: " , geek.isneginf (b))

  
# geek.inf: Positive infinity
# geek.NINF: Negative infinity

b = [[geek.inf], 

[geek.NINF]]

print ( "Is Negative Infifnity:" , geek.isneginf (b) )

Output:

 [[0 1 2 3 4 5] [6 7 8 9 10 11] [12 13 14 15 16 17]] Is Negative Infifnity: [[False False False False False False] [False False False False False False] [False False False False False False]] Is Negative Infifnity: [[False] [True]] 

Links:
https://docs.scipy.org/doc/numpy-dev/reference/generated/numpy. isneginf.html

Notes:
These codes will not work for online IDs. Please run them on your systems to see how they work. 
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This article is provided by Mohit Gupta_OMG