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Topic: doubts in matlab
Replies: 3   Last Post: Feb 18, 2013 12:00 AM

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dpb

Posts: 7,852
Registered: 6/7/07
Re: doubts in matlab
Posted: Feb 17, 2013 9:28 AM
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On 2/17/2013 5:21 AM, Shobana wrote:
> Hai...
> I am tried to find minimum value of particular columns and rows
> separately but i am getting wrong answers.
> for example a = [1 2 3 ;
> 6 5 4;
> 8 1 7]
> [x y] = min(a(2:end,2))
>
> instead of getting x= 3 y =2 i am getting some other value.how to write
> correct code for this concept.
> Thanks in advance


a(2:end,2) ==> [5;1] % 2nd to last rows, 2nd column

so you should find [x,y] == [1,2]

Not sure which you were really after that would return your expected
results otomh I don't see one.

If you're trying to write a subset of the array and then work min() on
the 2nd dimension, the ',2' is misplaced above (and you're missing the
2nd dimension for the subscript expression if you simply move it.

Try something like

[x ix] = min(a(2:end,:),2)

and see if you can get where you're going from there.

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