Hi R People:
There are 2 data sets of the iris data: one is iris3, which is a 3-d array,
and the other is iris, which
is a data frame with 150 rows and 6 variables.
Getting means is straightforward from the 3-day iris3
set:>apply(iris3,c(2,3),mean)
Setosa Versicolor Virginica
Sepal L. 5.006 5.936 6.588
Sepal W. 3.428 2.770 2.974
Petal L. 1.462 4.260 5.552
Petal W. 0.246 1.326 2.026>
Is there is similar way to obtain those values from the iris data frame,
please?
thanks in advance
R Version 1.9.1 Windows.
Sincerely,
Laura Holt
mailto: lauraholt_983 at hotmail.com