Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.


dpb
Posts:
9,850
Registered:
6/7/07


Re: doubts in matlab
Posted:
Feb 17, 2013 9:28 AM


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.




