how do i select data from a column based on another column?

Basically, I have two data columns: one with depth, the following column with its corresponding temperature. However the depth is in a random order with no sort of set intervals either.

How would I for example find all values for Temperature (column 2) for when depth (column 1) equals Zero?

Thanks, Pietro

Answer 1

[Azzi Abdelmalek]

a=[1 2;3 4;5 0;5 1;1 0;7 8;4 0]
out=a(a(:,2)==0,:)

[Pietro Dinmore]

thanks a lot! is there any way to loop it so that I can get separate columns for each depth?

When I attempt to loop it now, it remains within the same matrix. so basically im getting everything put in order of increasing depth.

[Azzi Abdelmalek]

You don't need a loop

c1=out(:,1)
c2=out(:,2)