Finding lowest value and the index from vector excluding zero and inf

Hi all,

I am trying to find lowest number excluding zero and inf from a vector:

I wanna the output to be:

r= 0.5

index= 6

I tried the following but it does not give me what I want:

clearvars
clc;
x       =   [1 3 2;-1 inf 0.5];
[r,index]   =   find (min(x(:)>0));

Answer 1

[Star Strider]

Try this:

x           =   [1 3 2;-1 inf 0.5];
[r,index]   =   min(x(x>0))

producing:

r =
          0.5

index =
     5

The find call is not necessary here.

[Mark Sc]

@Star Strider

Thanks for your answer.

The r is correct however, index should be 6..

As I would like to do x as vector , do not understand why index = 5 not 6 ?

clearvars
clc;
x           =   [1 3 2;-1 inf 0.5];
y           =   x(:);
[r,index]   =   min(y(y>0))

[Star Strider]

My pleasure!

I disagree.

See: Indexing with a Single Index for a discussion of MATLAB matrix indexing conventions.