Today I decided to create a new repository on GitHub where I am sharing code to do spreadsheet data manipulation in R.
The first version of the repository and R script is available here: SpreadsheetManipulation_inR
As an example I am using a csv freely available from the IRS, the US Internal Revenue Service.
This spreadsheet has around 170'000 rows and 131 columns.
Please feel free to request new functions to be added or add functions and code yourself directly on GitHub.