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From: Bruno Luong on 25 Apr 2010 12:24
Are you aware about the function ORTH()?

Bruno
From: atanas on 25 Apr 2010 13:06
"Bruno Luong" <b.luong(a)fogale.findmycountry> wrote in message <hr1qb5$o0h$1(a)fred.mathworks.com>...
> Are you aware about the function ORTH()?
>
> Bruno
I tried this. Conditions are very strong.
But, you can be show how to find matrix Q ?
Thanks you.
From: Roger Stafford on 25 Apr 2010 13:18
"atanas " <atanaslove2000(a)abv.bg> wrote in message <hr1p7k$dtd$1(a)fred.mathworks.com>...
> Sir Stafford,
> thank against.
> C's matrices are ready orhogonal.
> D's matrices need to find that
> Q = [D0 D1 D2 D3 zeros(2,2) zeros(2,2);
> zeros(2,2) zeros(2,2) D0 D1 D2 D3]
> must satisfy
> V*V'=eye(2); (condition 1)
> V*Q'=zeros(2); (condition 2)
> Q*V'=zeros(2); (condition 3)
> Q*Q'=eye(2); (condition 4).
> I have already only condition 1!
> Need to find conditions 2, 3 and 4.
> That all.
> Thanks for your help.
----------
That answers my first question, but my second question was "Have you figured out how to generate examples of C's in matlab that would satisfy (2)?" That is, V*V' = eye(4). Never mind the D's for the moment.

As Bruno indicates, you can make good use of 'orth'. The same is true of 'null'.

Have a try at it, Atanas. I think you will find the effort very rewarding.

Roger Stafford
From: atanas on 25 Apr 2010 13:39
"Roger Stafford" <ellieandrogerxyzzy(a)mindspring.com.invalid> wrote in message <hr1tgd$fe5$1(a)fred.mathworks.com>...
> "atanas " <atanaslove2000(a)abv.bg> wrote in message <hr1p7k$dtd$1(a)fred.mathworks.com>...
> > Sir Stafford,
> > thank against.
> > C's matrices are ready orhogonal.
> > D's matrices need to find that
> > Q = [D0 D1 D2 D3 zeros(2,2) zeros(2,2);
> > zeros(2,2) zeros(2,2) D0 D1 D2 D3]
> > must satisfy
> > V*V'=eye(2); (condition 1)
> > V*Q'=zeros(2); (condition 2)
> > Q*V'=zeros(2); (condition 3)
> > Q*Q'=eye(2); (condition 4).
> > I have already only condition 1!
> > Need to find conditions 2, 3 and 4.
> > That all.
> > Thanks for your help.
> ----------
> That answers my first question, but my second question was "Have you figured out how to generate examples of C's in matlab that would satisfy (2)?" That is, V*V' = eye(4). Never mind the D's for the moment.
>
> As Bruno indicates, you can make good use of 'orth'. The same is true of 'null'.
>
> Have a try at it, Atanas. I think you will find the effort very rewarding.
>
> Roger Stafford

Sir Stafford,
This is matrix L:
V =[ 0 -0.0407 0.0873 -0.1484 0.9072 0.3460 0.1610 0
0 0.0048 -0.0103 0.0175 -0.1069 -0.0998 0.8401 0.5219];
>> V*V'
ans =
1.0000 0.0000
0.0000 1.0000
This is good!
I need to find matrix Q!
Thanks again.
From: atanas on 25 Apr 2010 13:42
"Roger Stafford" <ellieandrogerxyzzy(a)mindspring.com.invalid> wrote in message <hr1tgd$fe5$1(a)fred.mathworks.com>...
> "atanas " <atanaslove2000(a)abv.bg> wrote in message <hr1p7k$dtd$1(a)fred.mathworks.com>...
> > Sir Stafford,
> > thank against.
> > C's matrices are ready orhogonal.
> > D's matrices need to find that
> > Q = [D0 D1 D2 D3 zeros(2,2) zeros(2,2);
> > zeros(2,2) zeros(2,2) D0 D1 D2 D3]
> > must satisfy
> > V*V'=eye(2); (condition 1)
> > V*Q'=zeros(2); (condition 2)
> > Q*V'=zeros(2); (condition 3)
> > Q*Q'=eye(2); (condition 4).
> > I have already only condition 1!
> > Need to find conditions 2, 3 and 4.
> > That all.
> > Thanks for your help.
> ----------
> That answers my first question, but my second question was "Have you figured out how to generate examples of C's in matlab that would satisfy (2)?" That is, V*V' = eye(4). Never mind the D's for the moment.
>
> As Bruno indicates, you can make good use of 'orth'. The same is true of 'null'.
>
> Have a try at it, Atanas. I think you will find the effort very rewarding.
>
> Roger Stafford

Sir Stafford,
This is matrix L:
V =[ 0 -0.0407 0.0873 -0.1484 0.9072 0.3460 0.1610 0
0 0.0048 -0.0103 0.0175 -0.1069 -0.0998 0.8401 0.5219];
>> V*V'
ans =
1.0000 0.0000
0.0000 1.0000
This is good!
I need to find matrix Q!
Thanks again.
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