How do I create a diagonal matrix with block matricies on the diagonal?
Hello all, I need to create a square matrix that has square block matricies along the diagonal and zeros everywhere else. That is to say, I need to create a block diagonal matrix where each submatrix is different. The overall matrix needs to have the form: M = - - | sm1 0 0 | | 0 sm2 0 | | 0 0 sm3 | - - Any advice would be greatly appreciated. Either post a reply or email me directly(phatphreak74@yahoo.ca). thanks in advance, the phreak
phatphreak74
comp.soft-sys.matlab
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lunamoonmoon
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phat phreak wrote:
> Hello all,
> I need to create a square matrix that has square block matricies
> along the diagonal and zeros everywhere else.
> The overall matrix needs to have the form:
>
> M =
> - -
> | sm1 0 0 |
> | 0 sm2 0 |
> | 0 0 sm3 |
> - -
hi friend,
maybe your problem can be solved by this:
>> M=diag([2 6 8 9])
M =
2 0 0 0
0 6 0 0
0 0 8 0
0 0 0 9
it's very simple, diag(x), where x is a vector, return a matrix with x's
element on the diagonal and zeros everywhere else :P
www.vettigli.tk
Im1phat phreak wrote: > > > Hello all, > > I need to create a square matrix that has square block matricies > along the diagonal and zeros everywhere else. That is to say, I > need > to create a block diagonal matrix where each submatrix is > different. > The overall matrix needs to have the form: > > M = > - - > | sm1 0 0 | > | 0 sm2 0 | > | 0 0 sm3 | > - - > > Any advice would be greatly appreciated. Either post a reply or > email me directly(phatphreak74@yahoo.ca). > > thanks in advance, > the phreak Hi! Use blkdiag: a=magic(2); b=ones(2); c=hankel(1:2); D=blkdiag(a,b,c) HTH PB
|
0 |
|
PB
8/16/2005 5:42:17 AM
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