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fix #29644: getproperty of Tridiagonal{SparseVector} #29646

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Merged
merged 2 commits into from
Oct 16, 2018
Merged

fix #29644: getproperty of Tridiagonal{SparseVector} #29646

merged 2 commits into from
Oct 16, 2018

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@fredrikekre
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@fredrikekre fredrikekre added linear algebra Linear algebra bugfix This change fixes an existing bug backport pending 1.0 labels Oct 15, 2018
@fredrikekre fredrikekre changed the title fix #29644: getfield of Tridiagonal{SparseVector} fix #29644: getproperety of Tridiagonal{SparseVector} Oct 15, 2018
@fredrikekre fredrikekre changed the title fix #29644: getproperety of Tridiagonal{SparseVector} fix #29644: getproperty of Tridiagonal{SparseVector} Oct 15, 2018
andreasnoack
andreasnoack approved these changes Oct 15, 2018
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This should fix the immediate problem here but eventually, we should probably try to come up with a more efficient representation of L. The current one could easily cause the machine to run out of memory.

@fredrikekre
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try to come up with a more efficient representation of L

We could just skip the Array call for both L and U and return Bidiagonal?

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We could just skip the Array call for both L and U and return Bidiagonal?

That won't work. Notice the loop right below your change. It applies the permutation which breaks the bidiagonal patterns of L. Hence a banded type would work but we don't have that in LinearAlgebra. An alternative would be some kind of composition of Bidiagonal and a permutation matrix.

@andreasnoack andreasnoack merged commit 0902d58 into master Oct 16, 2018
@andreasnoack andreasnoack deleted the fe/tridiag branch October 16, 2018 07:42
@KristofferC KristofferC mentioned this pull request Oct 19, 2018
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KristofferC pushed a commit that referenced this pull request Oct 19, 2018
@fredrikekre @KristofferC
fix #29644: getproperty of Tridiagonal{SparseVector} (#29646)
4a96798 
* fix #29644: getfield of Tridiagonal{SparseVector}

* Fix tests.

(cherry picked from commit 0902d58)
KristofferC pushed a commit that referenced this pull request Feb 11, 2019
@fredrikekre @KristofferC
fix #29644: getproperty of Tridiagonal{SparseVector} (#29646)
0ce2865 
* fix #29644: getfield of Tridiagonal{SparseVector}

* Fix tests.

(cherry picked from commit 0902d58)
KristofferC pushed a commit that referenced this pull request Feb 20, 2020
@fredrikekre @KristofferC
fix #29644: getproperty of Tridiagonal{SparseVector} (#29646)
44bf22b 
* fix #29644: getfield of Tridiagonal{SparseVector}

* Fix tests.

(cherry picked from commit 0902d58)
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@fredrikekre @andreasnoack @KristofferC