How to store values from a loop in a matrix

Im running a simulation in Simscape Multibody that is outputting the velocities in a 199x1 double (called velocity). Im then changin one of the variables 25 times, in a loop and i want to get a big matrix at the end that will output all of the velocites in one place. This is my current code:

  %% landing velocity 
  %initialise matrix
  landing_velcity=[];
  for i = 1:25
  c=9200;
  M=300+(100*i);
  system=sim ('dropping.slx');
  landing_velocity(i)=velocity
  end

The error I'm getting is that the left and right sides have different elements.

Answer 1

[Adam Danz]

Pre-allocate your loop variable according to the number of loops and the length of the variable being stored. Here's an example.

landing_velocity = nan(25, numel(velocity));  % updated to fix typos
for i = 1:25
    . . .
    landing_velocity(i,:)=velocity; 
end

[Image Analyst]

landing_velocity = nan(25, numel(velocity)); % 2 corrections

[Adam Danz]

Good catch.