"Yuji Zhang" <email@example.com> wrote in message <firstname.lastname@example.org>... > Hi~ I've a question - maybe trivial. > > why you wanna use cumtrapz(x',y') instead of cumtrapz(x,y) ? they're the same right? >
They are the same if x,y are vectors.
Otherwise (array non-vector) if it important their orientation.