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N Madani SYED


7 total contributions since 2011

Professional Interests: Earthquake engineering

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Question


Avoiding inverse of a matrix
Hi all, I need to compute the following (RHS matrices known): *Z* _bb_ = *M* _bb_ - ( *M* _bi_ * inv( *M* _ii_ ) * *M* _...

7 years ago | 2 answers | 0

2

answers

Question


Adding elements of 3D matrices
Hi all, Suppose A(10,10,3) and I need to add the elements of A to get B(10,10,1) such that B(1,1,1) = A(1,1,1)+A(1,1,2)+A(1...

7 years ago | 2 answers | 0

2

answers

Question


Index of reordered vector
Hi all I better ask my question directly through example Suppose A = [1 2 3 4 5 6] and I reorder the vector A to get ...

7 years ago | 2 answers | 0

2

answers

Question


MATLAB function for reordering the matrix rows and columns as desired
Hi all, Suppose I have a nxn matrix ordered row-wise as well as column-wise as 1,2,3...10 (say n=10). Now if I wish to reorder ...

8 years ago | 1 answer | 0

1

answer

Question


Large scale generalized eigenvalue problem involving dense symmetric positive-definite matrices
Hi all, I need to solve a generalized eigenvalue problem [A][x]=[B][x][lambda]; where [A] and [B] are positive definite matri...

8 years ago | 2 answers | 0

2

answers

Answered
Matrix operations without loop.
I think the following should work for i = 1:10 for j = 1:100 m = Q(i); n = B(i,j); R(i,j)= A(m,n); ...

8 years ago | 0

Question


Solving a Riccati equation via Schur decomposition in the versions later than MATLAB 7.0
Hi, I was using ric_schr (Mu Analysis and Synthesis Toolbox) command in MATLAB 7.0 to solve riccati equation via schur decompos...

8 years ago | 2 answers | 0

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answers