For computing statistics on a dataset we will be using psych package from R pacman::p_load(pacman, dplyr, GGally, ggplot2, ggthemes, ggvis, httr, lubridate, plotly, rio, rmarkdown, shiny, stringr, tidyr) library(datasets) head(iris) p_load(psych) describe(iris$Sepal.Length) describe(iris) When we execute the above script following is what we get in console This gives us more…

R has very good mechanism to do data plotting. Let’s explore few of the commands present in R To plot simple graph- library(datasets) head(iris, 300) plot(iris$Species) The best part of plot() is that it automatically understands the kind of datatype we are handling and automatically plots the graphs- In the…

R has great number of Packages. These packages help in working with R really amazing. You can utilize a lot of pre-built functions in your application, without creating everything from scratch- There are two kinds of packages- Base Packages These packages are installed when we install R, but are not…

Having spent last 6months in learning Data Engineering, I decided to check what can I pick next. So, continuing in that quest starting off some work in learning R- Installing R R can be installed from Cran website. Just download the installer based on your OS and you should be…

I have been doing code reviews for almost 10+ years in my career now and many times I feel telling the same set of things to my team members again and again :) . But, if we follow certain guidelines as developers then we can create a quality software which…

MongoDB provides an excellent framework to run aggregations. It’s a set of tools through which you can run any kind of report or do data analysis on one or more MongoDB collections- In majority of cases, we use MongoDB just to insert and query the data, but with the aggregation…

In this article, Iam going to show how can we build a WebSocket based application in TypeScript. We are going to create a folder in this case called websocket-example and add the below content to package.json file { "name": "websocket-example", "version": "1.0.0", "description": "", "main": "index.js"…

In this article, we are going to have a brief introduction on different keys and search restrictions in Cassandra. In one of my previous articles, I had mentioned about Cassandra’s columnar based approach. You may refer that article here . Start Cassandra on local cassandra -f 2. Open the command…

Neo4j is a graph database and is different from row, columnar or no-sql database. It has different nodes and they are inter-connected to each other with relationships. Following are the commands to create nodes in Neo4j-n Creating a Node create(n:Employee) Create a Node with properties CREATE (n:Employee{code : 'TV74545', designation…