How to resolve Error using reshape function?

Hi,

I'm trying to use this code to reshape a matrix x= 1x427289 but I keep getting this error:

Error using reshape

Size arguments must be real integers.

here is my code :

tm= (0.25*length (x));   % 25 percent interval of x
x=[x nan(1,tm*ceil(numel(x)/tm)-numel(x))];           % augment vector to make even
mnX=mean(reshape(x,tm,[]),1,'omitnan');  % take the mean over every 25 percent interval of x

Any help would be appreciated. Thanks in advance.

Answer 1

[Matt J]

tm= ceil(0.25*length (x)); %or floor?

[Saad Alqahtani]

That works well. Thanks so much!