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can you add a function to calculate the eigen vectors and eigen values of a matrix?
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When is the first time the material in this lecture is referenced?
If it's from a much later lecture, let's move it down to just in front of that lecture.
jstac updated
7 months ago
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Dear all,
I think dstedc produces inaccurate eigenvectors for a specific tridiagonal symmetric matrix. In order to show it, I assembled the attached test. It computes eigenpairs of the Jacobi matri…
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Hello,
I noticed at a certain point my code started to crash because of some NaNs introduced by Forward diff when performing derivatives of the eigenvectors of matrix.
Here was my previous code (i…
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```
I tried this with my SVD4 branch.
In [52]: M = Matrix(((0,1),(1,0),(1,1)))
In [53]: P, Q, R = M.SVD()
In [54]: P
Out[54]:
⎡ ⎽⎽⎽ ⎽⎽⎽ ⎽⎽⎽⎤
⎢╲╱ 6 -╲╱ 2 -╲╱ 3 ⎥
⎢───── ────── ─────…
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Usually we want to visualize not just one eigenvector but a set of them, so in this case, it is better to use a unified colormap for all of them.
A few points:
- all the text labels, if they are …
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mesh, that is passes to run mesh shall be a cli option, also is missing for run_thermal
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On the large lattices the reading of all eigenvectors might not fit into memory, we likely have to carefully check how many of them we have in memory at the same time.
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The wrong file as follows:
#Generate PC1 eigenvectors
evect = pca.eigenvectors
PC1 = np.reshape(evect[0,:],(1300, 3))
np.savetxt("PC1_eigenVectors.dat", PC1, delimiter=" ", fmt="%8.5f")
The wron…