How to update values with dplyr

Question

I\'m currently trying to update values from a data.frame using dplyr butI don\'t know if it is possible to replace a subset of values?

# the net4 table
head(         


        

Answer 1

Use mutate and ifelse

mutate(net4,
  ave = ifelse(ave < 10 & ave != temp2, temps2 / NNET * NET, ave)
)