"a h" <firstname.lastname@example.org> wrote in message news:email@example.com... > "Nasser M. Abbasi" wrote in message <firstname.lastname@example.org>...
>> may be you need find(x==50.2) instead >> > So I have tryed with your advice but now i get >>> find(x==50.6675) > > ans = > > Empty matrix: 0-by-1 > > which i dont know what means? because my vector is not empty
See TideMan's message in this thread. Your vector does not contain the exact number 50.6675 so FIND indicates it couldn't find that value in your vector. Yes, I know that's what you saw when you displayed it to the Command Window. When displayed with FORMAT SHORT (which is the default) only four decimal places of your values are displayed, but the actual values are stored in double precision. Use TideMan's tolerance-based solution.