Recode/replace variables conditionally with R dyplyr?

Question

I am trying to use the following code to recode my variables conditionally so that the values in var 2 are replaced by NA if there is any value greater than 0 in var1. If var1 h

Answer 1

We don't need var2 = TRUE, instead it should be var2

library(dplyr)
df %>%
    mutate(var2 = ifelse(var1 > 0, NA, var2))

if_else is type specific, so you need to have the correct NA type matching the 'var2' type. Assuming it is numeric :

df %>%
   mutate(var2 = if_else(var1 > 0, NA_real_, var2))

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But, this can be also done with :

df %>%
    mutate(var2 = replace(var2, var1 > 0, NA))

Or with case_when :

df %>%
     mutate(var2 = case_when(var1 > 0 ~ NA_real_, TRUE ~ var2))