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Test array values for finiteness in Numpy
To test array values for finiteness, use the numpy.isfinite() method in Python Numpy. Returns True where x is not positive infinity, negative infinity, or NaN; false otherwise. This is a scalar if x is a scalar.
This condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain its original value. Note that if an uninitialized out array is created via the default out=None, locations within it where the condition is False will remain uninitialized.
Steps
At first, import the required library −
import numpy as np
Create an array with some inf values −
arr = np.array([1, 2, 10, 50, -np.inf, 0., np.inf])
Display the array −
print("Array...
", arr)Get the type of the array −
print("
Our Array type...
", arr.dtype)
Get the dimensions of the Array −
print("
Our Array Dimensions...
",arr.ndim)Get the number of elements in the Array −
print("
Number of elements...
", arr.size)
To test array values for finiteness, use the numpy.isfinite() method in Python Numpy −
print("
Test array for finiteness...
",np.isfinite(arr))Example
import numpy as np
# Create an array with some inf values
arr = np.array([1, 2, 10, 50, -np.inf, 0., np.inf])
# Display the array
print("Array...
", arr)
# Get the type of the array
print("
Our Array type...
", arr.dtype)
# Get the dimensions of the Array
print("
Our Array Dimensions...
",arr.ndim)
# Get the number of elements in the Array
print("
Number of elements...
", arr.size)
# To test array values for finiteness, use the numpy.isfinite() method in Python Numpy
print("
Test array for finiteness...
",np.isfinite(arr))Output
Array... [ 1. 2. 10. 50. -inf 0. inf] Our Array type... float64 Our Array Dimensions... 1 Number of elements... 7 Test array for finiteness... [ True True True True False True False]
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