Re: [R] Functions for Sum of determinants of ranges of matrix subsets

Hi: Try this: > z <- matrix(rnorm(100), nrow = 10) > sum(sapply(seq_len(nrow(z)), function(k) det(z[-k, -k]))) [1] 1421.06 where > sapply(seq_len(nrow(z)), function(k) det(z[-k, -k])) [1] 432.11613 81.65449 516.95791 54.72775 804.32097 -643.35436 [7] -411.15932 394.18780 84.13173 10

[R] Functions for Sum of determinants of ranges of matrix subsets

Dear R-help list, Pls I have this problem. Suppose I have a matrix of size nxn say, generated as follows   z<-matrix(rnorm(n*n,0,1),nrow=n)   I want to write a function such that for i in 1:n, I will remove the rows and columns corresponding to i (so, will be left with n-1*n-1 submatrix in each