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[Octave-bug-tracker] [bug #38954] kron product: output not sparse for di
From: |
Carnë Draug |
Subject: |
[Octave-bug-tracker] [bug #38954] kron product: output not sparse for diagonal input |
Date: |
Thu, 09 May 2013 19:22:42 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.12) Gecko/20100101 Firefox/10.0.12 Iceweasel/10.0.12 |
URL:
<http://savannah.gnu.org/bugs/?38954>
Summary: kron product: output not sparse for diagonal input
Project: GNU Octave
Submitted by: carandraug
Submitted on: Thu 09 May 2013 07:22:41 PM GMT
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Matlab Compatibility
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 3.6.4
Operating System: Any
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Details:
If any of the inputs in the kron function is sparse, the output should be
sparse as well. However, if the first input is not sparse AND comes from eye
() then it won't:
> issparse (kron (sparse (rand (5)), rand (5)))
ans = 1
> issparse (kron (rand (5), sparse (rand (5))))
ans = 1
> issparse (kron (sparse (rand (5)), eye (5)))
ans = 1
> issparse (kron (eye (5), sparse (rand (5))))
ans = 0
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?38954>
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- [Octave-bug-tracker] [bug #38954] kron product: output not sparse for diagonal input,
Carnë Draug <=