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[Octave-bug-tracker] [bug #46110] broadcasting with diagonal matrices fa
From: |
jan |
Subject: |
[Octave-bug-tracker] [bug #46110] broadcasting with diagonal matrices fails for addition |
Date: |
Sat, 03 Oct 2015 09:56:24 +0000 |
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:41.0) Gecko/20100101 Firefox/41.0 |
URL:
<http://savannah.gnu.org/bugs/?46110>
Summary: broadcasting with diagonal matrices fails for
addition
Project: GNU Octave
Submitted by: pfa
Submitted on: lör 3 okt 2015 09.56.23
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Incorrect Result
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 4.0.0
Operating System: GNU/Linux
_______________________________________________________
Details:
Broadcasting for diagonal matrices fails in general for addition in the
releases 3.8.2, 4.0.0, and dev. Broadcasting works in the case of addition of
a scalar and returns then a full matrix.
A related bug is addresses for the case of sparse matrices in the bug #41441:
"Broadcasting does not behave properly on sparse matrices".
>> diag([1,2])+[0;0]
error: operator +: nonconformant arguments (op1 is 2x2, op2 is 2x1)
>> sparse(diag([1,2]))+[0;0]
error: operator +: nonconformant arguments (op1 is 2x2, op2 is 2x1)
>> full(sparse(diag([1,2])))+[0;0]
ans =
1 0
0 2
>> diag([1;2])+0
ans =
1 0
0 2
>> sparse(diag([1;2]))+[0]
ans =
1 0
0 2
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?46110>
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- [Octave-bug-tracker] [bug #46110] broadcasting with diagonal matrices fails for addition,
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