what is summarised?

I can't understand the syntax. What is summarised?

if mod(sum([subCarbon;prodCarbon;metCarb(cofMetIDs...

(ismember(cofMetIDs,find(model.S(:,i)))))]),2) == 0

Answer 1

[Cris LaPierre]

The columns of the array resulting from this concatenation command

[subCarbon; prodCarbon; metCarb(cofMetIDs(ismember(cofMetIDs,find(model.S(:,i)))))]

[Walter Roberson]

It certainly would have been clearer if they had broken out the metCarb(cofMetIDs(ismember(cofMetIDs,find(model.S(:,i))))) expression into a different variable (or series of variables.)

[Ioannis Vourvachakis]

thank you!