[R] how can i compute the average of three blocks for each column ?

Dear all, I want to compute the average of the three blocks for each x-variable which is equal slide in the code below. How can I do that ? block x1x2x3x4x5 12322 232423 12125 262139 1232422

Re: [R] how can i compute the average of three blocks for each column ?

r-help@stat.math.ethz.ch Subject: [R] how can i compute the average of three blocks for each column ? > Dear all, > > > I want to compute the average of the three blocks for each > x-variable which is equal slide in the code below. How can I do that &g