[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Octave-bug-tracker] [bug #40296] Consistent matrix return sizes
From: |
David Spies |
Subject: |
[Octave-bug-tracker] [bug #40296] Consistent matrix return sizes |
Date: |
Fri, 18 Oct 2013 04:07:09 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/28.0.1500.71 Chrome/28.0.1500.71 Safari/537.36 |
URL:
<http://savannah.gnu.org/bugs/?40296>
Summary: Consistent matrix return sizes
Project: GNU Octave
Submitted by: dspyz
Submitted on: Fri 18 Oct 2013 04:07:08 AM GMT
Category: Octave Function
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Feature Request
Status: None
Assigned to: None
Originator Name: dspies
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: dev
Operating System: Any
_______________________________________________________
Details:
Can there be a flag which removes all special cases in matrix return sizes?
In other words, if I say v = A(b), where b is a logical vector, the return
type will always be a column vector, regardless of the dimensions of A
(instead of being a row vector when A has vertical dimension 1).
Additionally, if v = A(i) where i is a double matrix/vector, v will always
have the same dimensions as i, regardless of the dimension of A (instead of
being a row vector when i has horiz. dimension 1 and v has vert. dimension 1)
And the find method, [i,j,v] = find(m) will always return column vectors for
i, j, and v, even if m is a row vector.
When I'm trying to write Octave functions, I keep on having to deal with these
special cases and they don't seem like they should be necessary.
For instance, if I write
[i,j] = find(m);
inds = [i,j]';
for b = inds
r = inds(1)
c = inds(2)
# Do something with r and c
endfor
This fails when m is a row vector, because i and j are made into row vectors
and then inds ends up being a 2nx1 column vector instead of 2xn matrix as
expected
It would be nice if I could turn off all these special case behaviors (even if
it's not matlab compatible)
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?40296>
_______________________________________________
Message sent via/by Savannah
http://savannah.gnu.org/
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Octave-bug-tracker] [bug #40296] Consistent matrix return sizes,
David Spies <=