Programming

Objectives Welcome to yet another R blog on data analysis and wranling using R At the end of this tutorial you will: understand the role of data wrangling understand the basic capabilities of dplyr acquire skills to perform common data wrangling using dplyr,stringr,tidyr and forcats packages What is data wrangling?

Instructor coordinates Department of Mathematics and Computational Sciences , University of Zimbabwe What is R? R is an open source programming language and environment. It is designed for data analysis, graphical display and data simulations.

Introduction ggplot2 is an R package by Hadley Wickham and Winston Chang that implements Wilkinson’s Grammar of Graphics. The emphasis of ggplot2 is on rapid exploration of data, and especially high-dimensional data.

Every time some operations have to be repeated, a loop may come in handy. Loops are good for: Doing something for every element of an object; Doing something until the processed data runs out; Doing something for every file in a folder; Doing something that can fail, until it succeeds; Iterating a calculation until it reaches convergence.