filtering with multiple conditions on many columns using dplyr

Question

I\'ve searched on SO trying to find a solution to no avail. So here it is. I have a data frame with many columns, some of which are numerical and should be non-negative. I w

Answer 1

Using base R to get your result

cond <- df[, grepl("_num$", colnames(df))] >= 0
df[apply(cond, 1, function(x) {prod(x) == 1}), ]

  id  sth1 tg1_num sth2 tg2_num others
1  1  dave       2   ca      35    new
4  4 leroy       0   az      25    old
5  5 jerry       4   mi      55    old

Edit: this assumes you have multiple columns with "_num". It won't work if you have just one _num column