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NumPy: Find the nearest value from a given value in an array

NumPy: Random Exercise-9 with Solution

Write a NumPy program to find the nearest value from a given value in an array.

Sample Solution :

Python Code :

import numpy as np
x = np.random.uniform(1, 12, 5)
v = 4
n = x.flat[np.abs(x - v).argmin()]
print(n)

Sample Output:

4.2507132388

Pictorial Presentation:

NumPy Random: Find the nearest value from a given value in an array.

Python-Numpy Code Editor:

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m