Python numpy-Indexing

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How to remove rows from a Numpy array based on multiple conditions ?

Last Updated: 23 July 2025

In this article, we will learn how to remove rows from a NumPy array based on multiple conditions. For doing our task, we will need some inbuilt methods provided by the Nu...read more

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How to skip every Nth index of NumPy array ?

Last Updated: 23 July 2025

NumPy arrays offer efficient numerical operations and data storage. When working with large arrays, sometimes it's necessary to skip specific indices for optimization or d...read more

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How to remove specific elements from a NumPy array ?

Last Updated: 23 July 2025

In this article, we will discuss how to remove specific elements from the NumPy Array. Remove specific elements from a NumPy 1D arrayDeleting element from NumPy array usin...read more

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How to find the Index of value in Numpy Array ?

Last Updated: 23 July 2025

In this article, we are going to find the index of the elements present in a Numpy array.Using where() Methodwhere() method is used to specify the index of a particular el...read more

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How to delete multiple rows of NumPy array ?

Last Updated: 23 July 2025

NumPy is the Python library that is used for working with arrays. In Python there are lists which serve the purpose of arrays but they are slow. Therefore, NumPy is there ...read more

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Python numpy-Indexing

How to delete last N rows from Numpy array?

Last Updated: 23 July 2025

In this article, we will discuss how to delete the last N rows from the NumPy array.Method 1: Using Slice OperatorSlicing is an indexing operation that is used to iterate ...read more

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How to get index of NumPy multidimensional array in reverse order?

Last Updated: 23 July 2025

In this article, we will see how to get the index of the NumPy multidimensional array in reverse order.ApproachFirst, we import the NumPy library and initialize the necess...read more

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How to Get Values of an NumPy Array at Certain Index Positions

Last Updated: 27 September 2025

In NumPy, you can access or modify array elements at specific indices. The numpy.put() function allows you to insert values into an array at designated positions, supporti...read more

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Replace NumPy Array Elements that doesn't Satisfy the Given Condition

Last Updated: 09 October 2025

If elements in a NumPy array don’t meet a certain condition, you replace them with another value (like 0, -1, or NaN), while keeping the elements that satisfy the conditio...read more

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How to Access Different Rows of a Multidimensional NumPy Array

Last Updated: 09 October 2025

When we need to access different rows of a multidimensional NumPy array such as first row, last two rows or middle rows it can be done using slicing. NumPy provides simple...read more

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Python numpy-Indexing

Get Row Numbers of NumPy Array having Element Larger than X

Last Updated: 29 September 2025

The task is to find the row indices of an array where at least one element is greater than a given threshold X. For Example: Given array [[1, 5], [7, 2], [3, 9]] and X = 6...read more

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Find Indices of Elements Equal to Zero in a NumPy Array

Last Updated: 27 September 2025

It means you want to find the positions (row and column indices) where the elements of a NumPy array are equal to zero. For example, Given the array [[1, 0, 3], [0, 5, 6],...read more

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How to access a NumPy array by column

Last Updated: 26 June 2025

NumPy arrays are used to handle large datasets efficiently. When working with 2D arrays, you may need to access specific columns for analysis or processing. NumPy makes th...read more

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Python numpy-Indexing

Select an element or sub array by index from a Numpy Array

Last Updated: 29 August 2020

The elements of a NumPy array are indexed just like normal arrays. The index of the first element will be 0 and the last element will be indexed n-1, where n is the total ...read more

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Accessing Data Along Multiple Dimensions Arrays in Python Numpy

Last Updated: 15 July 2025

NumPy (Numerical Python) is a Python library that comprises of multidimensional arrays and numerous functions to perform various mathematical and logical operations on the...read more

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