R Tutorials

Introduction to R and RStudio This tutorial is designed as a short introduction into the R programming language and specifically using RStudio. R is a free, open source programming language originally developed to analyze data, but it has been greatly expanded to do a lot of tasks.

Getting ready Loading up and checking the data Making the 3D scatter plot Add predictions Fit a model Making Predictions Adding predictions Prediction surface Make the prediction Adding the surface ‘plotly’ is a popular graphing package in Python, but also has an R interface.

General For loop structure For loop iterating through elements of a vector For loop iterating through index Closing remarks This tutorial is designed to help understand/make for loops.

Logical values Relational operators NA and logic Other is.x() functions Logical operators Vector logic Relational operators on vectors Logical operators on vectors Special vector operators If-Else statements If-Elif-Else statments Closing remarks This tutorial is designed to help understand logic in R and use that logic to write conditional statements (i.

Getting ready Loading up and checking the data Making our first ggplot2 graph Initializing ggplot2 Adding geoms (making a scatter plot) Color aesthetics Adding another geom (a line of best fit) A side note on aes() Faceted plots aka subplots facet_wrap facet_grid Other common graphs Histogram Boxplot Extra handy things Saving ggplots as a variable Changing labels Changing default theme Closing remarks ‘ggplot2’ is a popular graphing package for the R programming language.