Expand and Complete with tidyr

demonstration of tidyr::expand() and tidyr::complete() with helpers

Modeling in Groups Using the dplyr group_modify Function

models with dplyr::group_modify()

Calculating Proportion with N

count and overall percentage in groups


explorations with tidyeval

dplyr filter() Benchmark

benchmarking dplyr filter versus base subsetting methods

Expand Dates Between

fill dates between a start and stop time with dplyr syntax