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2004 Mar 13
2
recursive matrix multiplication question
...ibers,
I am wondering if there is an efficient means of doing recursive matrix
multiplication in R. My data resides in a 4 X 2541 matrix from which I need
to extract 2541 2X2 matrices based on each row. If I attempt something like
this:
function(AO)
{A<-AO
{for(t in 1:4)
A[t+1]<-matrix(h0m[t,1:4],nrow=2,ncol=2,byrow=FALSE)%*%matrix(h0m[t+1,1:4],nrow=2,ncol=2,byrow=FALSE)
}
}
I get this type of error:
1: number of items to replace is not a multiple of replacement length
2: number of items to replace is not a multiple of replacement length
3: number of items to replace is not a multi...