How to find the Index of value in Numpy Array ?

How to Find the Position of a Number in an Array in MATLAB?

Last Updated : 04 Jul, 2021

Finding the position of a number in an array, which can be done using the find() function. The find() function is used to find the indices and values of the specified nonzero elements.

Syntax

find(X)

Parameters: This function accepts a parameter.

X: This is the specified number whose position is going to be found in the array.

Return Value: It returns the position of the given number in a specified array.

Example 1

Matlab

% MATLAB code for getting the position  
% of element 4 
X = [2 4 4 5 6 4]; % Initializing an array  
% of some elements 
  
% Calling the find() function to find  
% the position of 4 
Position_of_4 = find(X==4)

Output:

Example 2

Matlab

% MATLAB code for getting the position  
% of element 4 in terms of rows and columns. 
X = [2 4 4 5 6 4];  
  
% Calling the find() function to find  
% the position of 4 in terms of rows  
% and columns 
[Row, column] = find(X==4)

Output:

How to find the Index of value in Numpy Array ?

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