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[Octave-bug-tracker] [bug #35150] spdiags() 4-argument incompatibility
From: |
anonymous |
Subject: |
[Octave-bug-tracker] [bug #35150] spdiags() 4-argument incompatibility |
Date: |
Wed, 21 Dec 2011 23:16:21 +0000 |
User-agent: |
Mozilla/5.0 (Ubuntu; X11; Linux i686; rv:8.0) Gecko/20100101 Firefox/8.0 |
URL:
<http://savannah.gnu.org/bugs/?35150>
Summary: spdiags() 4-argument incompatibility
Project: GNU Octave
Submitted by: None
Submitted on: Wed 21 Dec 2011 23:16:19 UTC
Category: Interpreter
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Matlab Compatibility
Status: None
Assigned to: None
Originator Name: J.J. Green
Originator Email: address@hidden
Open/Closed: Open
Discussion Lock: Any
Release: dev
Operating System: GNU/Linux
_______________________________________________________
Details:
For some small (seemingly silly) cases, Octave's spdiags() fails
octave:16> spdiags([0.5 -1 0.5], 0:2, 1, 1)
error: spdiags: A(I): index out of bounds; value 7 out of bound 3
error: called from:
error: /usr/local/share/octave/3.5.90+/m/sparse/spdiags.m at line 85, column
7
while Matlab's suceeds
>> spdiags([0.5 -1 0.5], 0:2, 1, 1)
ans =
(1,1) 0.5000
In fact these cases are not as silly as they first appear, they are used as
the starting point for adaptive refinement schemes.
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