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## Found 218 Articles for Data Analysis

63 Views

MATLAB is an efficient tool to process and manipulate matrices. We can use it to shuffle the columns in a matrix. For this, MATLAB provides built-in functions that can be used together to shuffle the columns in a matrix. In this tutorial, I will explain how you can randomly shuffle columns in a matrix using MATLAB. How to Random Shuffle Columns of Matrix Using MATLAB? MATLAB provides some built-in functions that we can use to shuffle the columns in a matrix. We have to follow the steps given below to shuffle the columns in a matrix using MATLAB. Step ... Read More

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MATLAB provides various built-in functions to plot a function of two variables with the help of different types of plots like mesh, surface, scatter plots, etc. In this tutorial, I am going to explain the process of plotting a function of two variables in MATLAB. Plot a Function of Two Variables in MATLAB The step-by-step process to plot a function of two variables in MATLAB is explained below. Step (1) − Define the range of x and y points. Step (2) − Create a grid of x and y points. For this, use the "meshgrid" function in MATLAB. ... Read More

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In digital image processing, random pseudo coloring is a technique in which pixels of a grayscale image are assigned a random color. In this tutorial, I am going to explain the process of performing random pseudo coloring in a grayscale image using MATLAB. What is Random Pseudo Coloring in Grayscale Image? In digital image processing, "random pseudo coloring" is a way of converting a gray scale image to a random colored image. In this technique, the intensity value of each pixel of the gray scale image is assigned a random color value. Random pseudo coloring in grayscale image is widely ... Read More

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In digital image processing, the process of improving visual quality and clarity of a digital image by changing the color intensities is referred to as "contrast enhancement". Contrast enhancement is an important image processing task in various fields such as photography, remote imaging, medical imaging, etc. We can use various tools to perform contrast enhancement of an image. In this tutorial, I will explain the process of performing contrast enhancement using histogram equalization in MATLAB. What is Contrast Enhancement? In digital image processing, contrast enhancement is a basic image processing task performed to improve visual quality of an image to ... Read More

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As we know, MATLAB is a powerful to perform image processing and signal processing. We can use it to alter different parameters of an image like brightness, contrast, saturation, and more. In this article, I will explain how we can perform contrast enhancement of a color image using MATLAB. What is a Contrast Enhancement? In digital image processing, the process of improving the colors and visual quality of an image is called contrast enhancement. This technique improves the quality of an image by changing the brightness and color concentration among different regions of the image. Contrast enhancement is used ... Read More

122 Views

A histogram is nothing but a graphical representation that shows the distribution of a set of data points. The normalization of a histogram is a process of distributing its frequencies over a wide range. Before discussing the implementation of histogram normalization in MATLAB, let us first get an overview of histogram normalization. What is Histogram Normalization? A histogram is a graphical way of representing the distribution of frequencies of a dataset. Sometimes, we see a histogram in which the frequencies are distributed in a small range. It results in producing poor contrast in a digital image. There is a ... Read More

102 Views

MATLAB is a powerful tool to perform various operations on matrices. In the case of matrices, iterating through elements of a matrix is one of the common operations used to perform various other matrix operations such as finding sum of all elements of a matrix, finding maximum and minimum values in a matrix, and more. In this article, I will explain how to iterate through elements in an N-dimensional matrix in MATLAB. Iterating Through Elements of a Matrix In a matrix, iterating through each element means visiting and processing every value present within the matrix. An N-dimensional matrix is one ... Read More

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As we know, MATLAB is a powerful tool to perform various operations on matrices and arrays. Vector is a type of matrix having only one row or one column. We can determine the inverted version of a vector using MATLAB. For this, MATLAB provides different methods and functions. So, let’s discuss the process of inverting a vector using different methods in MATLAB. Inverse a Vector Using Indexing Method in MATLAB In MATLAB, we can utilize the indexing method to find inverse of a given vector. In this method, the elements of the vector are arranged in the reverse order using ... Read More

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CSV or Comma Separated Values is a file format that can store numeric and text values. The most important characteristic of a CSV file is that it allows to exchange the data among a variety of sources. MATLAB is a powerful tool that provides a large number of built-in functions to perform various operations. It provides the following two functions that enable the users to import data with numeric and text values from a CSV file into the MATLAB workspace. readtable() importdata() In this tutorial, I will show you the process of importing data from a CSV file ... Read More

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These three types of signals (unit step, sinusoidal, and exponential) are basic signals used in analyzing different types of systems. A unit step signal has a step of magnitude one after a specific time instant. A sinusoidal signal is a type of signal which has either a sine or cosine waveform. A exponential signal is a type of signal that rises or decays exponentially with time. We can use MATLAB to generate all these types of signals. In this tutorial, I am going to explain how you can generate unit step, sinusoidal, and exponential signal in ... Read More