Re: [R] How sum all possible combinations of rows, given 4 matrices

2013-06-10 Thread Estigarribia, Bruno
It works, Arun. Thanks! (FYI, a couple a the matrices I am dealing with have 1000+ rows, so I had to do in on a supercomputer at work. For the curious, I am trying to find all possible scores in a model f language mixing described in: Title: Structured Variation in Codeswitching: Towards an Empiric

Re: [R] How sum all possible combinations of rows, given 4 matrices

2013-05-28 Thread Estigarribia, Bruno
Thank you, Arun, I'll try it and let the list know if it works so the thread can be closed. I haven't worked in R for several years so I am really rusty. FYI, for people interested in why I want to do this, I am trying to calculate all the possible outcomes of applying the model below to a bilingua

Re: [R] How sum all possible combinations of rows, given 4 matrices

2013-05-27 Thread arun
Hi, Not sure if this is what you expected: set.seed(24) mat1<- matrix(sample(1:20,3*4,replace=TRUE),ncol=3) set.seed(28) mat2<- matrix(sample(1:25,3*6,replace=TRUE),ncol=3) set.seed(30) mat3<- matrix(sample(1:35,3*8,replace=TRUE),ncol=3) set.seed(35) mat4<- matrix(sample(1:40,3*10,replace=TRUE),nc

Re: [R] How sum all possible combinations of rows, given 4 matrices

2013-05-27 Thread Jeff Newmiller
I expect the answer to involve manipulating indices. But why do you need to do this? This looks suspiciously like homework, and there is a no-homework policy on this list (see the Posting Guide). --- Jeff Newmiller

Re: [R] How sum all possible combinations of rows, given 4 matrices

2013-05-27 Thread Bert Gunter
Homework? We don't do homework here. -- Bert On Mon, May 27, 2013 at 8:24 AM, Estigarribia, Bruno wrote: > Hello all, > > I have 4 matrices with 3 columns each (different number of rows though). I > want to find a function that returns all possible 3-place vectors > corresponding to the sum by c