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Topic: Matrix dimensions must agree.
Replies: 13   Last Post: Mar 24, 2014 5:34 PM

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Posts: 9,850
Registered: 6/7/07
Re: Matrix dimensions must agree.
Posted: Mar 21, 2014 11:40 AM
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On 3/21/2014 8:46 AM, Steven Lord wrote:
> "Vitor Andrade" <> wrote in message
> news:lghenc$13g$

>>> dpb <> wrote in message <lgfaqk$820$>...
>>> > On 3/20/2014 12:57 PM, Vitor Andrade wrote:

>>>> if x > y
>> elseif y > x

> I wouldn't use this approach; I'd instead select the elements to keep.
> It avoids the IF and ELSEIF statements at the expense of a call to MIN:
> minRows = min(x, y);
> a = a(1:minRows, :);
> b = b(1:minRows, :);


It then also has the cost of the selection on both where one is already
ok that the if...elseif avoids which is why I went that route.

My _real_ suggestion/hope was that Vitor would rethink his generation
process and avoid the problem at the start instead of having to fix it
up afterwards.

I also wrote the example for vectors illustrating the idea (hence
length() and linear addressing) but I suppose expecting the
extrapolation to an array was too much of leap of faith for the neophyte :)


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