Re: [R] question on model.matrix

2012-01-30 Thread Paul Johnson
Greetings On Sat, Jan 28, 2012 at 2:43 PM, Daniel Negusse daniel.negu...@my.mcphs.edu wrote: while reading some tutorials, i came across this and i am stuck. i want to understand it and would appreciate if anyone can tell me. design - model.matrix(~ -1+factor(c(1,1,2,2,3,3))) can

[R] question on model.matrix

2012-01-29 Thread Daniel Negusse
I am new to this group - joined today. I am in because i have an assignment to do using R = microarray analysis using affy (bioconductor). while reading some tutorials, i came across this and i am stuck. i want to understand it and would appreciate if anyone can tell me. design -