Replace a subset of a data frame with dplyr join operations

Question

Suppose that I gave a treatment to some column values of a data frame like this:

  id animal weight   height ...
  1    dog     23.0
  2    cat     NA
  3           


        

Answer 1

Isn't dplyr::rows_update exactly what we need here? The following code should work:

df %>% dplyr::rows_update(sub_df, by = "id")

This should work as long as there is a unique identifier (one or multiple variables) for your datasets.