Why does my array do this?

I'm tring to take the mean of a set of values and store them in an array. The problem is, instead of putting the value 'm' in the array and repeating the function, it fills the array with every consecutive integer up to 3000. Anyone got a solution?

for fileidx = 1 : numel(files)
    mydata{fileidx} = importdata(fullfile(folder, files(fileidx).name));
    A=1:fileidx;
    A=A';
    y=fft(mydata{fileidx});
    c=xcorr(xf,y);
    m=mean(abs(c));
    B=1:m;
    B=B';

 end

Answer 1

[Aveek Podder]

Instruction 'B = 1:m' will create a vector consisting of [1,2,3,...,k] where k is [m].

I think you want to append m at the end of B. To do so use the following instruction:

B(end + 1) = m;