Sample random rows in dataframe?

Question

I am struggling to find the appropriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Can anyone help me out?

Answer 1

The following commands give you a new dataframe randomly selected from df

df <- your dataframe

indx <- sample(nrow(df), 0.1*nrow(df), replace=F)

df2 <- df[indx,]