How to get a .csv file into R?

Question

I have this .csv file:

ID,GRADES,GPA,Teacher,State

3,\"C\",2,\"Teacher3\",\"MA\"

1,\"A\",4,\"Teacher1\",\"California\"

And what I want to

Answer 1

You can use

df <- read.csv("filename.csv", header=TRUE)

# To loop each column
for (i in 1:ncol(df))
    {
    dosomething(df[,i])
    }
# To loop each row
for (i in 1:nrow(df))
    {
    dosomething(df[i,])
    }

Also, you may want to have a look to the apply function (type ?apply or help(apply))if you want to use the same function on each row/column