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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to plot multiple graphs in Matplotlib?
To plot multiple graphs in matplotlib, we will use the following steps −StepsCreate x, y1 and y2 data points using numpy.Add a subplot to the current figure at index 1.Plot curve 1 using x and y1.Add a subplot to the current figure at index 2.Plot curve 2 using x and y2.To display the figure, use show() method.Exampleimport numpy as np from matplotlib import pyplot as plt plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True x = np.linspace(-2, 2, 10) y1 = np.sin(x) y2 = np.cos(x) plt.subplot(211) plt.plot(y1) plt.subplot(212) plt.plot(y2) plt.show()Output
Read MoreHow to resolve exception Element Not Interactable Exception in Selenium?
We can resolve the exception – ElementNotInteractableException with Selenium webdriver. This exception is thrown if a webelement exists in DOM but cannot be accessed. The below image shows an example of such an exception.If a specific webelement is overspread by another webelement we normally get this exception. To fix this, we can either apply explicit wait so that the webdriver waits for the expected condition - invisibilityOfElementLocated of the overlaying webelement.Or, we can apply the expected condition - elementToBeClickable on the webelement that we want to interact with. To resolve a permanent overlay, we have to use the JavaScript Executor ...
Read MoreHow to align text to the left in Tkinter Label?
Tkinter Label widget can be aligned using the anchor attributes. In order to calculate the accommodate spacing and alignment of the widget, anchor would help in a better way. Anchor provides several options such as N, W, S, E, NW, NE. SW, SE which can be defined in the pack manager itself.ExampleIn the following example, we will align the Label text of an application to the left by adding the anchor attribute towards “w” direction.#Import the required library from tkinter import* #Create an instance of tkinter frame win= Tk() #Set the geometry win.geometry("750x250") #Create a Label Widget Label(win, text= "New ...
Read MoreHow to calculate standard error of the mean in Excel?
This same standard error would be a crucial statistic that serves as a parameter. But are you able to determine it throughout the process of sampling and distribution. A standard error of measurement, often known as the SEM, is indeed a statistical measurement which also provides an approximation of the difference between both the sample mean of the data and the actual population mean. You are aware that the Standard Error is equal to the Standard Deviation divided by the Square Root of the Total Number of Samples; hence, we can convert this into an Excel formula by writing Standard ...
Read MoreSQL Query to Convert Rows to Columns in SQL Server
Introduction The PIVOT operator is used to rotate rows of a table into columns. It is useful for generating cross-tabular reports, where the results are presented in a summary form. The PIVOT operator is available in SQL Server 2005 and later versions. The PIVOT operator is used to convert rows into columns in a SQL Server database. It is often used to generate cross-tabular reports, where the results are presented in a summary form. Definition In SQL Server, the PIVOT operator allows you to convert rows into columns. It is useful for generating cross-tabular reports, where the results are ...
Read MoreWhat are the principles of Public key Cryptosystem in Information Security?
Public key cryptography has become an essential means of providing confidentiality, especially through its need of key distribution, where users seeking private connection exchange encryption keys. It also features digital signatures which enable users to sign keys to check their identities. The approach of public key cryptography derivative from an attempt to attack two of the most complex problems related to symmetric encryption. The first issue is that key distribution. Key distribution under symmetric encryption needed such as − that two communicants already shared a key, which somehow has been ...
Read MoreWhat does it mean by select 1 from MySQL table?
The statement select 1 from any table name means that it returns only 1. For example, If any table has 4 records then it will return 1 four times. Let us see an example. Firstly, we will create a table using the CREATE command. mysql> create table StudentTable -> ( -> id int, -> name varchar(100) -> ); Query OK, 0 rows affected (0.51 sec) Inserting records mysql> insert into StudentTable values(1, 'John'), (2, 'Carol'), (3, 'Smith'), (4, 'Bob'); Query OK, 4 rows affected (0.21 ...
Read MoreDifference between Conductor, Semiconductor, and Insulator
In order to differentiate the Conductor, Semiconductor, and Insulator, first we have to understand their extent of forbidden band i.e. separation between their conduction and valance band. The main difference between the conductor, semiconductor and insulator is in their conductivity.ConductorA conductor is a type of material that allows the electric current to flow through it i.e. it possesses least resistance in the path of free electrons. In case of conductor, the valance and conduction bands overlap. Due to this overlapping, a small potential difference across a conductor causes the free electrons to constitute electric current.All the metals are conductors. The ...
Read MoreDifference Between MBR and GPT Partition
On Windows-based PCs, MBR and GPT are two prevalent partitioning techniques. They are layout specifications for storage devices such as an HDD (Hard Disk Drive) or SSD (Solid State Drive). The partition style instructs Windows on accessing the data on the present drive and is selected during disc startup. As a result, having a partition style for each disc in use is required. The partition styles MBR (Master Boot Record) and GPT (GUID Partition Table) are used to start a hard disc. MBR is the most common format and is compatible with BIOS systems. GPT is a newer type that ...
Read MoreDifference between IGBT and MOSFET
Insulated Gate Bipolar Transistor (IGBT) and Metal Oxide Semiconductor Field Effect Transistor (MOSFET) are two types of transistors that are the basic building blocks of modern electronic circuits. Both IGBT and MOSFET are voltage-controlled devices. However, they are different in various aspects. Go through this article to get a basic overview of how these two transistors operate and how they are different from each other.What is IGBT?IGBT stands for Insulated Gate Bipolar Transistor. IGBT is a three terminal semiconductor device which is used in various electronic circuits for switching and amplification of signals. The three terminals of the IGBT are: ...
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