The min(y) function where y is a vector
2 views (last 30 days)
Show older comments
If i have used a loop say
for x=1:1:10
y(x)=(x^2)/2
end
then use min(y) to display the minimum from this vector, 0.5. How would I get it to display the corresponding x value?
thanks
0 Comments
Answers (2)
Fangjun Jiang
on 12 Nov 2011
In your code, x is a scalar. It is over-written every iteration in the for-loop.
min() can return the index.
x=1:10;
y=x.^2/2;
[ymin,pos]=min(y);
x_val=x(pos)
0 Comments
Wayne King
on 12 Nov 2011
[minval,index] = min(y);
In this case it's trivial since index is the x value at which the minimum occurs. This function is increasing on your x values, so the minimum is at the first element.
0 Comments
See Also
Categories
Find more on Operators and Elementary Operations in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!