generate column values with multiple conditions in R

Question

I have a dataframe z and I want to create the new column based on the values of two old columns of z. Following is the process:

&g         


        

Answer 1

I really liked the answer "dinre" posted to flodel's blog:

for (i in 1:length(data_Array)){
data_Array[i] <- switch(data_Array[i], banana="apple", orange="pineapple", "fig")
}

With warnings about reading the help page for switch carefully for integer arguments.