How to find a maximum number not considered minus sign?

Sir,

I want find the maximum number in the given array.

But, I am not considered negative sign.

for example, a=[4, 3, -8],

output is = -8. Because 8 is the maximum number.

how I get this output.

thank you.

Answer 1

[Andrei Bobrov]

a = [4, 3, -8];

[~,ii] = max(abs(a));
out = a(ii);

[Poorva]

Sir, how to do the same in a matrix

[Bruno Luong]

The same command should work on matrix to.

Answer 2

[Matz Johansson Bergström]

It sounds like you want to find the max absolute value of a vector. This can be accomplished simply by taking the absolute value and remember the index to that value and picking it out:

a = [1,4,5,-8,3]; 
[val, ind] = max(abs(a)); 
a(ind)

[Matz Johansson Bergström]

Ah, Andrei beat me to it ;-)

[Jothi]

i accept this answer also.

thank you sir.