Concatenating two text columns in dplyr

Question

My data look like this:

round <- c(rep(\"A\", 3), rep(\"B\", 3))
experiment <- rep(c(\"V1\", \"V2\", \"V3\"), 2)
results <- rnorm(mean = 10, n = 6)
         


        

Answer 1

You could also try this:

library(tidyr)
library(dplyr)
df = df %>% 
   unite(combined, round, experiment, sep = "_", remove = FALSE)

The output will be:

combined round experiment   results
 A_V1     A         V1      10.152329
 A_V2     A         V2      10.863128
 A_V3     A         V3      10.975773
 B_V1     B         V1       9.964696
 B_V2     B         V2       9.876675
 B_V3     B         V3       9.252936

This will retain your original columns.