function myrotationmatrix = create2DRotationMatrix (z)
  %%%%%%%%%%%%%%%%%
  %the function create2DRotationMatrix takes an agle in degrees as a argument,
  %and returns the corresponding 2D rotation matrix
  %
  %
  %     INPUT : rotation angle in degrees
  %
  %     OUTPUT : rotation matrix in size 2 by 2
  %
  %Created by: Gabriel LUCAS
  %Date Creation: 03/02/2023 11:05:22
  %
  %Last Modified: 03/02/2023 11:06:51
  %%%%%%%%%%%%%%%%%%
  z = z*(pi/180);
  myrotationmatrix = round([cos(z),sin(z);(-sin(z)),cos(z)] .* 10000) ./ 10000;
  
  %test
  angle = 90;
  expectedrotationmatrix = [0 1;-1 0];
  angle = angle*(pi/180);
  testrotationmatrix = round([cos(angle),sin(angle);(-sin(angle)),cos(angle)] .* 10000) ./10000
  if (abs(abs(expectedrotationmatrix .- testrotationmatrix)) < 1e-10)
    disp("Test #1 Passed")
  else
    disp("Test #1 Failed")
  endif
  
endfunction