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rpipemagrittr

Multiply a variable in pipe

I'm new in pipes R. I have a dataframe like this

library(magrittr)
library(dplyr)
df = data.frame(a= c(1,2,3,4,5), b = c(3,4,5,6,7))

The result is 

df_min = df %>% filter(a > 2) %$%  as.data.frame( cbind(a=a*10, b)) 
> df_min
   a b
1 30 5
2 40 6
3 50 7

Is there is a more convinient and shorter way instead of %$% as.data.frame( cbind(a=a*10, b))?

Solution

  • A shorter option with data.table

    library(data.table)
setDT(df)[a > 2, .(a = a * 10, b)]