Displaying 1 result from an estimated 1 matches for "cross_product".
2010 May 08
1
matrix cross product in R different from cross product in Matlab
...# #sum
of elementwise multiplication of first column of first matrix with first
column of second matrix of second matrix
[2,] ? 2*5+5*2 ?
? cant figure out how these were derived, definitely this is NOT
identical to e.g. http://en.wikipedia.org/wiki/Cross_product
I can work it out for the tcrossprod
> c <- tcrossprod(g, h)
> c
[,1] [,2]
[1,] 32 14
[2,] 77 32
because
[,1] [,2]
[1,] 1*4+2*5+3*6 1*1+2*2+3*3 #sum of elementwise multiplication
of first line of first matrix with first line of sec...