How to preserve base data frame rownames upon filtering in dplyr chain

Question

I have the following data frame:

df <- structure(list(BoneMarrow = c(30, 0, 0, 31138, 2703), Pulmonar         


        

Answer 1

you can convert rownames to a column and revert back after filtering:

library(dplyr)
library(tibble)  # for `rownames_to_column` and `column_to_rownames`

df %>%
    rownames_to_column('gene') %>%
    filter_if(is.numeric, all_vars(. >= 8)) %>%
    column_to_rownames('gene')

#        BoneMarrow Pulmonary
# ATP1B1         30      3380
# PRR11        2703        27