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**Reported by bastian on 4 Dec 2012 09:03 UTC**
`dgeev` from LAPACK is called as
```
external "Fortran 77" dgeev("N", "V", n, Awork, n, eigenReal, eigenImag,
eigenVectors, n, eigenVectors,…
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关于第二章的建议,请放在这里。
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I keep getting this error when I run igl::eigs no matter what I do. I'm not sure what counts as too much information for an issue but I've been debugging this for 4h now so I've reached the breaking p…
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(using Python 3.5, pyNastran 0.7.2)
I have read an op2 containing the ouput of a SOL103 and pyNastran does not read:
- eigenfrequencies;
- eigenvectors;
- displacement.
I have loaded the op2 in Hype…
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When a generalized eigenvalue problem `A*x=lambda*B*x` is solved, infinite eigenvalues may occur (if and only if `B` is singular). That's why the LAPACK function `ggev` (which is used by `eig`/`_genei…
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Link to presentation: https://neurodatadesign.github.io/seelviz/reveal/week_105.html
Big Picture: By the end of this week give Ailey a pipeline that is useful and easy to use/modify
Memorize that 1 v…
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I would like to see an example of the generalized Davidson method in Anasazi being used with tpetra and a preconditioner from ifpack2. It's not clear how to incorporate a preconditioner because the ex…
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The following throws an error, even though a column vector times a `1 x n` matrix have consistent shapes.
```
julia> ones(5)*ones(1,5)
ERROR: DimensionMismatch("Cannot left-multiply a matrix by a v…
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Hi I'm Leonardo,
I'm writing a project using arpack++ to find the eigenvector and eigenvalue of an Laplacian matrix.
https://en.wikipedia.org/wiki/Laplacian_matrix
I standardized the matrix in ord…
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Re-implement `_normalized_graph_laplacian` to instead compute the unnormalized version, or `L = D - A`, where `A` is the affinity / kernel matrix, and `D` is the diagonal matrix.
Feel free to rename …