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'for' loop on elements of cell array (octave-3.4.2) - is it the way it i
From: |
Sergei Steshenko |
Subject: |
'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ? |
Date: |
Thu, 2 Feb 2012 03:39:11 -0800 (PST) |
Hello,
I have tried the following piece of code:
"
octave:1> foolist = {1, 2, 5}
foolist =
{
[1,1] = 1
[1,2] = 2
[1,3] = 5
}
octave:2> for foo = foolist foo endfor
foo =
{
[1,1] = 1
}
foo =
{
[1,1] = 2
}
foo =
{
[1,1] = 5
}
octave:3> foo{:}
ans = 5
octave:4> bar = [5]
bar = 5
octave:5>
".
OTOH, in
http://www.gnu.org/software/octave/doc/interpreter/The-_003ccode_003efor_003c_002fcode_003e-Statement.html#The-_003ccode_003efor_003c_002fcode_003e-Statement
I read:
"
In this case the variable i takes on the value of the columns of
the matrix or cell matrix. So the first loop iterates twice, producing
two column vectors [1;2], followed by [3;4], and likewise
for the loop over the cell array.
".
I have doubts regarding "i takes on the value of the columns" vs the observed
behavior. I.e., for example,
"
foo =
{
[1,1] = 5
}
"
doesn't look to me like a column (vector), though both
"
foo{:}
ans = 5
"
and
"
bar = [5]
bar = 5
"
do look to me like one element column or row vector - since there is just one
element, it doesn't matter whether the vector is column or row.
In other words, the output from the 'for' loop doesn't look like I expect, and
if my expectations (I expected '1, 2, 5' sequence) are wrong, which part of GNU
Octave documentations explains how the output should look ?
To make my doubt more clear, the output (the 'foo' variable value) looks like
yet another cell array to me, not like a (column) vector.
Maybe is a Matlab compatibility thing ?
Thanks,
Sergei.
- 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?,
Sergei Steshenko <=
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, Ben Abbott, 2012/02/02
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, Sergei Steshenko, 2012/02/02
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, James Sherman Jr., 2012/02/02
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, Sergei Steshenko, 2012/02/02
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, John W. Eaton, 2012/02/02
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, Sergei Steshenko, 2012/02/02
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, John W. Eaton, 2012/02/02
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, Sergei Steshenko, 2012/02/02
- Re: 'for' loop on elements of cell array (octave-3.4.2) - is it the way it is supposed to be ?, John W. Eaton, 2012/02/02