How to split data into training/testing sets using sample function

Question

I\'ve just started using R and I\'m not sure how to incorporate my dataset with the following sample code:

sample(x, size, replace = FALSE, prob = NULL)
         


        

Answer 1

We can divide data into a particular ratio here it is 80% train and 20% in a test dataset.

ind <- sample(2, nrow(dataName), replace = T, prob = c(0.8,0.2))
train <- dataName[ind==1, ]
test <- dataName[ind==2, ]