R – Lang Roadmap

Introduction to R

• Introduction
• Fun Facts about R
• Hello World in R Programming

Fundamentals of R

• Basic Syntax
• R Comments
• R Operators
• R Keywords
• R Data Types

Variables

• R Variables – Creating, Naming and Using Variables in R
• Scope of Variable in R
• Dynamic Scoping in R Programming
• Lexical Scoping in R Programming

Input and Output

• Taking Input from User in R Programming
• Scope of Variable in R
• Dynamic Scoping in R Programming
• Lexical Scoping in R Programming

Data Structures

• Data Structures in detail

Vector

• Introduction to Vectors
• Operations on Vectors
• Append Operation on Vectors
• Dot Product of Vectors
• Types of Vectors
• Assigning Vectors 
• Length of Vectors – length() Function
• Creating a Vector of sequenced elements – seq() Function
• Get Min and Max element of a Vector – range() Function
• Formatting Numbers and Strings – format() Function
• Replace the Elements of a Vector – replace() Function
• Sorting of a Vector – sort() Function
• Convert elements of a Vector to Strings – toString() Function
• Extracting Substrings from a Character Vector – substring() Function

Matrices

• Introduction to Matrices
• Create Matrix from Vectors
• Operations on Matrices
• Matrix Multiplication
• Combining Matrices
• Matrix Transpose
• Inverse of Matrix
• Working with Sparse Matrices
• Check if the Object is a Matrix – is.matrix() Function
• Convert an Object into a Matrix – as.matrix() Function
• Get or Set Dimensions of a Matrix – dim() Function
• Calculate Cumulative Sum of a Numeric Object – cumsum() Function
• Compute the Sum of Rows of a Matrix or Array – rowSums Function

Cloud Networking and Scalability

• Two Dimensional List in R Programming

Cloud Infrastructure and Architecture

• Introduction to Factors
• Level Ordering of Factors
• Convert Factor to Numeric and Numeric to Factor
• Check if a Factor is an Ordered Factor – is.ordered() Function
• Checking if the Object is a Factor – is.factor() Function
• Convert a Vector into Factor – as.factor() Function

Control Flow

• Control Statements
• if, if-else, if-else-if ladder, nested if-else, and switch
• For Loop
• While Loop
• Repeat loop
• goto statement
• Break and Next statements

Control Flow

• Introduction to Strings
• Working with Text
• String Manipulation
• Concatenate Two Strings String Matching
• How to find a SubString?
• Finding the length of string – nchar() method
• Adding elements in a vector – append() method
• Convert string from Lowercase to Uppercase – toupper() function
• Convert String from Uppercase to Lowercase – tolower() method
• Splitting Strings – strsplit() method
• Print a Formatted string – sprintf() Function

Object Oriented Programming

• Introduction to Object-Oriented Programming
• Classes
• Objects
• Encapsulation
• Polymorphism
• Inheritance
• Abstraction
• Looping over Objects
• Creating, Listing, and Deleting Objects in Memory
• S3 class
• Explicit Coercion
• R6 Classes
• Getting attributes of Objects – attributes() and attr() Function
• Get or Set names of Elements of an Object – names() Function
• Get the Minimum element of an Object – min() Function
• Get the Maximum element of an Object – max() Function

Error Handling

• Handling Errors in R Programming
• Condition Handling
• Debugging in R Programming

File Handling

• Reading Files in R Programming
• Writing to Files in R Programming
• Working with Binary Files in R Programming

Packages in R

• Introduction to Packages
• dplyr Package
• ggplot2 package
• Grid and Lattice Packages
• Shiny Package
• What Are the Tidyverse Packages?
• Data Munging

Data Interfaces

• Data Handling
• Importing Data in R Script
• How To Import Data from a File?
• Exporting Data from scripts 
• Working with CSV files 
• Working with XML Files
• Working with Excel Files
• Working with JSON Files 
• Reading Tabular Data from files
• Working with Databases
• Database Connectivity
• Manipulate Data Frames Using SQL

Data Visualization

• Graph Plotting
• Graphical Models
• Data Visualization
• Charts and Graphs
• Add Titles to a Graph
• Adding Colors to Charts
• Adding Text to Plots
• Adding axis to a Plot
• Set or View the
• Graphics Palette
• Plotting of Data using
• Generic plots
• Bar Charts
• Line Graphs
• Adding Straight Lines to a Plot
• Addition of Lines to a Plot
• Histograms
• Pie Charts
• Scatter plots
• Create Dot Charts
• Boxplots in R Language
• Stratified Boxplot
• Create a Heatmap
• Pareto Chart
• Waffle Chart
• Quantile-Quantile Plot
• Describe Parts of a Chart in Graphical Form
• Principal Component Analysis

Matrices

• Introduction to Arrays
• Multidimensional Array
• Array Operations
• Sorting of Arrays
• Convert values of an Object to Logical Vector – as.logical() Function
• Performing different Operations on Two Arrays – outer() Function
• Get Exclusive Elements between Two Objects – setdiff() Function