WinVector/FastBaseR

Examples of fast grouped row-wise operations in R (no C, C++, data.table, or dplyr used).

README.Rmd

FastBaseR

Examples of fast grouped row-wise operations in R (no C, C++, data.table, or dplyr used).

Timing example here.

Currently implements:

• grouped cumulative sum.
• grouped sum.
• grouped running maximum.
• grouped maximum.
• grouped argmax.

Todo:

• grouped running NA replacement (extending zoo::na.locf()).