The following code will change the representation of the three species to numbers:
iris$Species2 <- ifelse(iris$Species == "setosa", 1,ifelse(iris$Species == "versicolor", 2, 3))
We can verify if it has worked by running the table() function as follows (more on this function in the next section!):
table(iris$Species)
Thus, we will get the following output:
We can also execute the following code to verify whether the representation has changed:
table(iris$Species2)
Here is the output that we will get:
