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product of nonsingular matrices is singular?
I am generating this 1000x1000 real matrix A that is nonsingular. Linear algebra claims that det(A) = det(A') and that det(AA') ...
presque 8 ans il y a | 2 réponses | 1
2
réponsesQuestion
Running time worsening when matrices of size 2^k are involved.
I have experienced a worsening in the performances of a software when data of size 2^k for some k is involved. The problem is ve...
presque 8 ans il y a | 1 réponse | 0
0
réponseQuestion
multiple vectors histogram plotting
I would like to plot a histogram like the one in the picture, the x axis is labeled with different matrix names, and for each th...
environ 8 ans il y a | 1 réponse | 0
1
réponseQuestion
Scanning strings in a string array
I see that if I declare a string between ' ', I can have access to each single character. For instance: >> x = 'abc'...
environ 8 ans il y a | 2 réponses | 0
2
réponsesQuestion
Fiedler matrix determinant behaviour
With the following command I generate a 1000x1000 Fiedler matrix from the Matlab gallery: A = gallery('fiedler',rand...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
Generate random permutation matrix
I am trying to generate a random square matrix A of dimension n that has one and only one 1 per row and column. My idea is the...
plus de 8 ans il y a | 2 réponses | 0
