How do I do that in data.table? Find code for dozens of data tasks in this searchable cheat sheet of R data.table ... multiple if else statements (like SQL’s CASE) Calculate # Needs data.table ...

readxl data import Fast way to read Excel files in R, without dependencies such as Java. CRAN. read_excel(“my-spreadsheet.xls”, sheet ... wrangling, data analysis Do you know a great SQL ...