A histogram is a graphical representation of the distribution of a dataset. It is a powerful tool for visualizing the shape, spread, and central tendency of a dataset. Histograms are commonly used in data analysis, statistics, and machine learning to identify patterns, anomalies, and trends in data. Pandas is a popular data manipulation and analysis library in Python. It provides a variety of functions and tools to work with structured data, including reading, writing, filtering, cleaning, and transforming data. Pandas also integrates well with other data visualization libraries such as Matplotlib, Seaborn, and Plotly. To create a histogram from ... Read More

A cumulative histogram is a type of histogram that shows the cumulative distribution function (CDF) of a dataset. The CDF represents the probability that a random observation from the dataset will be less than or equal to a certain value. Cumulative histograms are useful when you want to compare the distribution of two or more datasets or when you want to visualize the proportion of data points that fall below a certain threshold. Plotly is a Python library for creating interactive and publication-quality visualizations. It is built on top of the D3.js visualization library and provides a wide range ... Read More

Correlation analysis is a crucial technique in data analysis, helping to identify relationships between variables in a dataset. A correlation matrix is a table showing the correlation coefficients between variables in a dataset. It is a powerful tool that provides valuable insights into the underlying patterns in the data and is widely used in many fields, including finance, economics, social sciences, and engineering. In this tutorial, we will explore how to create a correlation matrix using Pandas, a popular data manipulation library in Python. To generate a correlation matrix with pandas, the following steps must be followed − ... Read More

Data visualization is an essential part of data analysis and communication, and Python offers many tools and libraries to create visually appealing and informative charts. Two such libraries are Plotly and pptx. Plotly is a powerful library for creating interactive charts, including bar charts, while pptx is a library for working with PowerPoint presentations. Creating a bar chart using Plotly is relatively easy. You can specify the data to be plotted, the type of chart, and the layout of the chart, and Plotly will generate a highquality chart that can be easily customised. Once the chart is created, you can ... Read More

In Go programming language, field tags are metadata that can be attached to the fields of a struct type. These tags provide additional information about the field such as its name, data type, validation rules, etc. Field tags are used extensively in many Go libraries and frameworks, including database and web application frameworks. In this article, we will explore how to use field tags in the definition of a struct type in Go programming language. We will also discuss some common use cases of field tags and their benefits. What is a Struct Type in Go? A struct type is ... Read More

Based on the interface we have two types of applications CLI (Command Line Interface) applications and GUI (Graphical User Interface) applications. A command line application or, console application is the one which can be accessed from a shell or, command line through a text interface, these accepts inputs from the user in the text format. Unlike GUI Applications which provides a Graphical interface containing, buttons text boxes and icons, to the users to access the underlying application. Python is a popular programming language for developing CLI applications, though the process of packaging and distributing such applications is a bit ... Read More

Identifying colors in images is a task commonly performed in computer vision and image processing. It has a wide range of applications such as object detection, image segmentation, and image retrieval. In this article, we will see how to determine colors in an image using Python and OpenCV. Open CV is a popular computer vision library written in C/C++ with bindings for Python, OpenCV provides easy ways of manipulating color spaces. Open CV is open source and gives various algorithms useful in image processing. Before identifying colors in an image let us learn about some common image representation methods. ... Read More

Color spaces are different types of color modes, used in image processing and signals and system for various purposes. Open CV is a popular computer vision library written in C/C++ with bindings for Python, OpenCV provides easy ways of manipulating color spaces. Open CV is open source and gives various algorithms useful in image processing. In computer vision, colors are represented using color spaces. There are so many color spaces that are currently used in computer vision and image processing, each having its own unique characteristics and advantages. Some of the very common color spaces in image processing are ... Read More

Tkinter is a Python binding to the Tk GUI toolkit. It is the standard Python interface to the Tk GUI toolkit, and is Python's standard GUI. Tkinter is included with standard Linux, Microsoft Windows and macOS installations of Python. We can create many widgets from python’s tkinter module. One of those multiple widgets is Combobox which is a very widely used powerful tool that can be customized to create lists that allow users to select one or more options from a list of given options. The Combobox widget combines a text input with a drop-down list, allowing the user ... Read More

Python is a powerful programming language that provides many tools and libraries for different applications. We can also create a command line file downloader in python. Command line downloader is used to download files from internet manually through command line interface or your terminal without using browser. To create a command line file downloader in python we need two libraries, they are argparse and required. We should have basic knowledge of terminal or command line interface and python language before we start building this application. Installation Before we continue, we need to have the above mentioned libraries in our ... Read More