Finding the array location in the matrix

Hi everyone,

Suppose I have a matrix:

b = [8;5;9;12]

and:

max(b) = 12 %12 is in the fourth row

I'm looking for a command line which instead of giving me the maximum value, give it to me as a row number (e.g = 4, not 12).

Can anyone help me please?

Answer 1

[Geoff Hayes]

Hi Mohammad,

If the input is a vector, then you can do the following:

[val,idx] = max(b);

where val will be the maximum value of 12 and idx will be the index of 4. Type help max for more details. (It gets a little more complicated when the input is matrix.)

Geoff

[Moe]

Thanks again Geoff!