This is Driving Me Crazy: How can I get an index to follow a value, Find the Lowest Value in The Matrix WITHOUT Min and get it to display the Index as the lowest #?

I know this matrix below might seem kinda weird, but it's to do with a bigger part of a program I'm testing. I need 3 to be referenced as 511, 4 as 818, 7 as 379 and 8 as 812. I've researched hundreds of solutions but I can't get them to work for my situation.

z =  3     4     7     8
   511   818   379   812 
   

I want to be able to find the lowest value which I can see here is 379, but I wish to learn without min for understanding of the logic. Counter intuitive I know, but even with min, I cannot get it to display the index vs the value. Really grinds my gears. I'd appreciate the help.

Answer 1

[Mehmed Saad]

z =  [3     4     7     8
    511   818   379   812];

when you are using min here, it is comparing rows with each other and giving you min value because it works rowwise

to change it to column type

min(z,[],2)

it will give you

ans = 
      3
    379

if you just want to find the minimum value of 2nd row and it's index

[val,ind] = min(z(2,:))

if you want the corresponding value of 1st Row

z(1,ind)

If you want to the complete column of min

z(:,ind)

In 1 command

z(:,z(2,:)==min(z(2,:)))