[R] How do I use the proper r code to find the value of intersection (What horsepower(hp) does the “Valiant” have?)

François Morneau francois.morneau at ign.fr
Fri Sep 18 14:17:43 CEST 2015

Hello (Who?),

Perhaps should you try to do your homework, look at "An Introduction to
R" for example and read the help pages :

> ?intersect # is clearly not what your are looking for
> ?'[' # seems better
and you would have find that :
> mtcars["Valiant", "hp"] # is one way to get what you are looking for.

You should also have a look at :

> library(fortunes)
> fortune(122)



Le 18/09/2015 13:18, massmatics a écrit :
> I am studying for a quiz and I have some problems while reviewing. I used the
> command data(mtcars) and I used *intersect(mtcarsValiant,mtcarshp)* but the
> value I received was *numeric(0) *What is the proper r code I must use to
> get the correct value? (The value I should get is 105) Thanks!
> --
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