Array changes size every time I run the code

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Hi,

Im using matlab online and when I am running the code, the size/dimension of the array changes so that I get another error later in the code because the array need to be of a certain size.

The txt file is a array/list of float values with the dimensions: 99600x1. I have check the files in matlab by just opening them there and the dimension is correct there.

The problem is when I am running the code under, that the size of the arrays kx,ky,kz and ecg changes. And its not the same change every time. Sometimes some of the sizes are correct.

Anyone knows what is wrong?

Here is a image of an example. The sizes varies.

This is my code (I have also tried using readtable with a csv file instead):

kx = load("accx_mat_ex.txt");
ky = load("accy_mat_ex.txt");
kz = load("accz_mat_ex.txt");
ecg = load("ecg_mat_ex.txt");
ecgN = ecg/max(ecg);
k = kx+ky+kz;
kN = k/max(k);
whos
  Name          Size             Bytes  Class     Attributes

  ans           1x39                78  char                
  ecg       99600x1             796800  double              
  ecgN      99600x1             796800  double              
  k         99600x1             796800  double              
  kN        99600x1             796800  double              
  kx        99600x1             796800  double              
  ky        99600x1             796800  double              
  kz        99600x1             796800  double              