R is a programming language
environment specifically designed for statistical computing and graphics. Developed by Ross Ihaka and Robert Gentleman at the University of Auckland, New Zealand, R has gained widespread popularity in the fields of data analysis, statistical modeling, and machine learning. It provides a comprehensive set of tools for data manipulation, statistical analysis, visualization, and the development of data-driven applications.
R is an open-source language, making it accessible to a large community of users and developers. Its syntax is user-friendly, allowing for easy implementation of statistical and mathematical operations. R also supports a vast number of packages, each providing specialized functions for various data analysis tasks.
Key features of R include its ability to handle and manipulate diverse data types, support for data visualization through packages like ggplot2, and its extensibility, allowing users to create and share their packages. Additionally, R has a strong community that contributes to its continuous development and improvement.
Overall, R is a powerful tool for statisticians, data scientists, and researchers who seek a flexible and versatile environment for data analysis and visualization. Its applications span various industries, including finance, healthcare, and academia.
Introduction
- Overview of R Programming
- Installation of R and R Studio
- Understanding the interface of R Studio
- Running the first program in R
Core Programming Principles
- Types of variables
- Assigning Values to Variables
- Using the console
- Working with Operators
- The “If” statement
- The “While” Loop
- The “For” Loop
- User-Defined Functions
Vectors
- What is a Vector?
- Working with vectors
- Using the [] brackets
- Vectorized operations
- Functions
- Packages
Matrices
- Introduction to Matrices
- Building the First Matrix
- Naming Dimensions
- Colnames() and Rownames()
- Matrix Operations
- Visualizing With Matplot()
- Subsetting
- Visualizing Subsets
- Creating Your First Function
- Working on a Project
Lists
- Creating a List
- Indexing Lists With Brackets
- Indexing Lists Using Objects Names
- Editing Values in Lists
- Adding and Removing List Objects
- Applying Functions to Lists
Factors
- Working With Factors
- Splitting a Vector By a Factor Levels
- The tapply() Function
- The by() Function
Dataframe
- Introduction to Dataframe
- Importing data into R
- Exploring the dataset
- Using the $ sign
- Basic operations with a Data Frame
- Filtering a Data Frame
- Introduction to Data Visualization – qplot
- Building Dataframes
- Merging Data Frames
- Visualizing With Qplot
- Working on a Project
Advanced Data Visualization – GGPlot2
- Overview of GGPlot2
- Understanding the Grammar of Graphics
- What is a Factor?
- Aesthetics
- Plotting With Layers
- Overriding Aesthetics
- Mapping vs Setting
- Histograms and Density Charts
- Starting Layer Tips
- Statistical Transformations
- Using Facets
- Coordinates
- Perfecting By Adding Themes
- Working on a Project