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NumPy| How to get the unique elements of an Array

Last Updated: 15 July 2025

To find unique elements of an array we use the numpy.unique() method of the NumPy library in Python.It returns unique elements in a new sorted array.Example:Python3 ...read more

Python numpy-program

Python numpy-arrayManipulation

NumPy | Get the Powers of Array Values Element-Wise

Last Updated: 15 July 2025

To calculate the power of elements in an array we use the numpy.power() method of NumPy library.It raises the values of the first array to the powers in the second array.E...read more

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Python numpy-program

Python numpy-arrayManipulation

How to find the maximum and minimum value in NumPy 1d-array?

Last Updated: 15 July 2025

Let's see the various ways to find the maximum and minimum value in NumPy 1d-array.Method 1: Using numpy.amax() and numpy.amin() functions of NumPy library.numpy.amax(): T...read more

Python numpy-program

Python numpy-arrayManipulation

Calculate the sum of all columns in a 2D NumPy array

Last Updated: 21 July 2021

Let us see how to calculate the sum of all the columns in a 2D NumPy array.Method 1 : Using a nested loop to access the array elements column-wise and then storing their s...read more

Python numpy-arrayManipulation

Python numpy-Mathematical Function

Create a contiguous flattened NumPy array

Last Updated: 15 July 2025

Let us see how to create a contiguous array in NumPy.The contiguous flattened array is a two-dimensional and multi-dimensional array that is stored as a one-dimensional ar...read more

Python numpy-arrayManipulation

How to make a NumPy array read-only?

Last Updated: 04 November 2022

Let's discuss how to make NumPy array immutable i.e that can not be rewritten or can't be changed. This can be done by setting a writable flag of the NumPy array to false....read more

Python numpy-arrayManipulation

How to get all 2D diagonals of a 3D NumPy array?

Last Updated: 15 July 2025

Let's see the program for getting all 2D diagonals of a 3D NumPy array. So, for this we are using numpy.diagonal() function of NumPy library. This function return specifie...read more

Python numpy-arrayManipulation

Insert a new axis within a NumPy array

Last Updated: 15 July 2025

This post deals with the ways to increase the dimension of an array in NumPy. NumPy provides us with two different built-in functions to increase the dimension of an array...read more

Python numpy-arrayManipulation

Find the most frequent value in a NumPy array

Last Updated: 15 July 2025

In this article, let's discuss how to find the most frequent value in the NumPy array. Steps to find the most frequency value in a NumPy array:Create a NumPy array.Apply b...read more

Python numpy-arrayManipulation

Flatten a Matrix in Python using NumPy

Last Updated: 15 July 2025

Let's discuss how to flatten a Matrix using NumPy in Python. By using ndarray.flatten() function we can flatten a matrix to one dimension in python.Syntax:numpy_array.flat...read more

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Python numpy-arrayManipulation

Extracting the real and imaginary parts of an NumPy array of complex numbers

Last Updated: 15 July 2025

Numpy library gives us functions such as real() and imag() to find real and imaginary parts of a complex number. real() : To find real part of the complex number ima...read more

Python numpy-arrayManipulation

How to convert 1-D arrays as columns into a 2-D array in Python?

Last Updated: 15 July 2025

Let's see a program to convert 1-D arrays as columns into a 2-D array using NumPy library in Python. So, for solving this we are using numpy.column_stack() function of Num...read more

Python numpy-arrayManipulation

Find unique rows in a NumPy array

Last Updated: 15 July 2025

Finding unique rows means removing duplicate rows from a 2D array so that each row appears only once. For example, given [[1, 2], [3, 4], [1, 2], [5, 6]], the unique rows ...read more

Python numpy-arrayManipulation

How to Concatenate two 2-dimensional NumPy Arrays?

Last Updated: 15 July 2025

Sometimes it might be useful or required to concatenate or merge two or more of these NumPy arrays. In this article, we will discuss various methods of concatenating two 2...read more

Python numpy-arrayManipulation

Using NumPy to Convert Array Elements to Float Type

Last Updated: 15 July 2025

Converting array elements to float type in Python means transforming each item in an array into a floating-point number. For example, an array like ["1.1", "2.2", "3.3"] c...read more

Python numpy-arrayManipulation

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