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Programming Articles
Page 1740 of 2547
How to use Hashmap in TypeScript?
The Hashmap is the one kind of data structure that stores the key-value pairs of the different data. Like other programming languages, TypeScript also contains a built-in map data structure. In JavaScript, we can't define the key or value type that needs to be stored in the map. So, we need to create a map of the generic type. In TypeScript, we can define the type of the key and value to be stored in the map. Syntax Following is the syntax create the map in TypeScript − let hashMap = new Map(); Parameters key_Type − It is ...
Read MoreHow to change the color of the axis, ticks and labels for a plot in matplotlib?
We can change the color of the axis, ticks and labels, using ax.spines['left'].set_color('red') and ax.spines['top'].set_color('red') statements. To change the color of the axis, ticks, and labels for a plot in matplotlib, we can take the following steps −Create a new figure, or activate an existing figure, using plt.figure().Add an axis to the figure as part of a subplot arrangement, using plt.add_subplot(xyz) where x is nrows, y is ncols and z is the index. Here taking x = 1(rows), y = 2(columns) and z = 1(position).Set up X-axis and Y-axis labels using set_xlabel and set_ylabel method for creating ax using add_subplot().To ...
Read MoreGolang Program to Convert String Value to Byte Value
In this tutorial, we will learn how to convert string values to byte values using golang programming language. String Value − A string value is just a sequence of characters, like "abc". A string value is always enclosed in quotes. All types of characters are allowed (even digits, as in "abc123"). Strings can contain any number of characters. Byte value − The byte data type is an 8-bit signed two's complement integer. It has a minimum value of -128 and a maximum value of 127 (inclusive). The byte data type can be useful for saving memory in large arrays, where ...
Read MoreHow to Import Data from a CSV File with Numeric Values and Texts into MATLAB Workspace?
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 MoreSorting a Vector of Numeric Strings in Ascending Order
In this article, we'll examine a C++ procedure for ascendingly sorting an array of numerical string values. Sorting is a basic operation that entails organizing elements in a predetermined order. Because they are character-based strings that represent numbers, and these numerical strings provide a special set of challenges when it is related to sorting. The issue statement, a method and algorithm for solving it, a C++ implementation, a complexity reasoning of the provided approach, and a summary of the main points will all be covered. Problem Statement Consider a vector containing numerical strings, the aim is to arrange them in ...
Read MoreHow to remove decimal in MATLAB?
In mathematics, there are several types of numeric values such as integers (having no fractional part), floating point numbers (having fractional parts separated by a decimal), and more. In some data analysis and other computational applications, we are given floating point numbers that contain a decimal part, i.e., digits after a decimal point. But we require only integers. Hence, if you are using MATLAB as your data processing tool, then you can use it to remove decimals present in the given number. This tutorial is primarily meant for explaining the different methods of removing decimals from a given number using ...
Read MoreHow to Read Text File Backwards Using MATLAB?
In MATLAB, reading a text file backwards involves reversing the order of the lines written in the file. We can use MATLAB to reverse the order and read the text file backwards. For this, MATLAB provides various methods using different functions and algorithms. In this tutorial, I will explain the commonly used methods to read a text file backward using MATLAB. Create a Text File in MATLAB In MATLAB, we can create a text file using the built-in functions "fopen" and "fprintf". Example The following example demonstrates the process of creating a text in MATLAB. % MATLAB code to ...
Read MoreHow to Read an Image File in MATLAB?
Reading an image file is the first step in any digital image processing task. In MATLAB, reading an image file means the process of inputting or loading the digital image into the MATLAB workspace and store it in a variable. Let us now understand the process of reading an image file in MATLAB with the help of examples. Read an Image File in MATLAB In MATLAB, there is a built-in function named "imread" in the function library that is used to read an image file. Syntax img = imread(imageFilePath); Here, "img" is a variable to store the input ...
Read MoreHow to Randomly Shuffle Columns in Matrix in MATLAB?
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 MoreHow to Perform Random Pseudo Coloring in Grayscale Image Using MATLAB?
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 ...
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