[R] extraction - subsets

[vectorY==subsample] if I define subsample with more than 1 element, such as: subsample=c(2, 3) how can i extract the rows from matriX based on the elements in vectorY which are listed in subsample? many thanks Roberto Furlan University of Turin -- La mia

[R] fractional factorial design in R

for a design with 5 factors (2x3x3x5x2) and only main effects not confounded? thanks in advance! Roberto Furlan University of Turin, Italy PS: i've already tried to send this email, sorry if you 've received it again! La mia Cartella di Posta in Arrivo è protetta