Hello,
In your code, you save variables "S" and "ab" with the same name for each loop. Therefore, the 'trajektorien.mat' only stores the value of the last loop.
To avoid this problem you should save "S" and "ab" for each loop to a vector. Then just save the vector. Because of depending on how do you want to store data, below could be a possible solution
saveS_ab = [];
% Loop goes trough each row
for j=1:length(xwerte)
% loope goes through each column of specific row
for i=1:length(xwerte(j,:))
% Simple function that gives out two values and puts it into file
[S, ab] = dist_pt2refTraj(xwerte(j,i), ywerte(j,i), xd_ref, yd_ref);
saveS_ab = [saveS_ab; S ab];
save('trajektorien.mat', 'saveS_ab');
if ab > 20
error('Error. \n ab is to big')
end
end
end
Now, you data is store in varibale "saveS_ab"
Check does it work or not.
