Found 214 Articles for Data Analysis

MATLAB is an efficient tool to process and manipulate digital images. In MATLAB, a digital image is specified as a two-dimensional matrix where the elements of the matrix represent the pixel intensity of the image. When the pixel intensity of a digital image is represented as a 2D matrix, then it is known as spatial domain. For any digital image specified in 2D matrix form or spatial domain, there is a term 'spatial resolution' which describes how sharply we can see the objects in the image. Also, there is another term 'brightness resolution' which describes pixel intensity of the image. ... Read More

MATLAB is a robust and high-level programming language extensively used in engineering and scientific fields for system design. The most important fact about MATLAB is that it provides an easy-to-use graphical user interface (GUI). MATLAB has a built-in App Designer tool that allows users to develop a variety of applications that seamlessly translate their concepts into user-friendly GUIs. Overall, MATLAB is an invaluable tool for conveying complex information in a simplified and accessible manner. In this tutorial, we will explore how to create a GUI App using App Designer in MATLAB. How to Create Apps using MATLAB App Designer? The ... Read More

Let us start this tutorial with a brief discussion on "what is inverse of a square matrix" and "the significance of Cayley Hamilton theorem". What is Inverse of Square Matrix? In linear algebra, there is a fundamental concept called the inverse of a square matrix. Consider a square matrix ‘A’, then there will another square matrix ‘A-1’ such as A.A-1 = I, where I is an identity matrix. Here, A-1 is called the inverse of the square matrix A. It is an important point to note that for a given square matrix the inverse can be found if and only ... Read More

In MATLAB, a matrix is a 2D array that is mainly used store numerical data. MATLAB allows users to perform several different types of mathematical operations on matrices. This tutorial is primarily meant for explaining two matrix operations namely, finding indices of maximum and minimum elements of the matrix. However, MATLAB does not provide any direct method for finding the indices of maximum and minimum value of a matrix, but we can do this by using a combination of different built-in functions. For example, to find the index of maximum value of matrix, we can use a combination of the ... Read More

In MATLAB, a cell array is a type of data structure used to hold data of different data types and sizes. In short, a cell array allows us to store different types of data like numbers, characters, strings, arrays, and more. In a cell array, each cell can contain a specific type of data. Cell array is a powerful tool to handle heterogeneous data. In MATLAB, the curly braces '{}' are used to create a cell array, i.e. CellArray = {10, 'TutorialsPoint', [2 3 4]}; Hence, cell arrays play a vital role, when we need to store different types ... Read More

MATLAB is a powerful tool to manipulate matrices. In this article, we will explore how to extract subsets of consecutive entries in a matrix using MATLAB. But before that let's first get an overview of subsets of consecutive entries in a matrix. In a matrix, a set of elements that located in either rows or columns, or both in a sequence is referred to as a subset of consecutive entries in the matrix. The subsets of consecutive entries in a matrix can be extracted by specifying a range of columns and rows. The subsets of consecutive entries in a matrix ... Read More

Double Interpolation is a mathematical method used to calculate values within a set of data points. It is basically an advanced version of interpolation, as it is used to interpolate a function that depends on two variables. In other words, the double interpolation is a method of estimating value of a function within a set of a data points by combining two distinct interpolation processes. In this tutorial, I will explain how to calculate double interpolation using lookup table in MATLAB. But before let's get a basic overview of terms "interpolation", "double interpolation", and "lookup table". What is Interpolation? ... Read More

Data holds essential information that informs decision−making in many different disciplines in the modern world. However, employing conventional methods might be challenging when working with a large volume of complicated data. Artificial intelligence (AI), a potent tool that has transformed how we analyze data, enters the picture in this situation. Organizations can use AI to find hidden patterns and trends and improve decisions. In this article, the impact of AI on data analysis is examined using case studies from India's healthcare, financial, agricultural, governance, and educational sectors. India's innovation landscape is changing as a result of AI, creating a bright ... Read More

In digital image processing, there is a technique called histogram equalization which is used to enhance the visual quality of an image by manipulating contrast in the image. Histogram equalization improves the quality of an image by redistributing the pixel values across the entire image, so that the histogram of the image can be uniformly distributed. Histogram is nothing but the frequency of occurrence of each pixel intensity value. Sometimes, we see that the pixel intensities in an image are concentrated in a particular range and results in the poor visual quality of the image. Histogram equalization is used to ... Read More

In MATLAB, a denoising filter is a tool that can reduce or remove noise from a digital image or a digital signal. As we know, noise is an unwanted signal or disturbance in a digital signal that impacts the quality of the signal or can cause errors in the signal processing. Therefore, it is required to remove or reduce the noise in a signal or image. This can be done with the help of a denoising filter. In this tutorial, we will explore several different types of denoising filter in MATLAB and will implement them using MATLAB programming. Types of ... Read More