how can we measure X value inside for loop ?

According to my code, the object that located at position A [-50; 50], I want to move it from position A to position B and let it return to A . So, I want to calculate X value at position B. But the problem, I couldn't measure X at B. My question is that, how can I let the point measure its X value at each position that reach it.

Thanks in advance.

oldPosition = [-50; 50]; % Position A
Velocity = 2 % Velocity of object
angleoption = [-14.3239 -7.1620 -4.7746 1.4324 1.5915 1.7905 7.1620 14.3239]; % turning angles of object 
for ii=1:numel(angleoption)

    pickangle11 = angleoption(ii) % select angle 
    mydir = [cos(pickangle11(:)) .* Velocity ,sin(pickangle11(:)) .* Velocity]; % rotated displacement
    newPosition  = oldPosition + mydir     % position B
    startPosition = newPosition  - mydir   % again return to the original position A
    
    X(ii)=random value % just an example...means at each direction the object at
   % A position is 10 and at B is ? here when its move from A to B I got 10
   % or the same value at A for all directions and positions that
   % reached.
   % MEANS X VALUE DOESN'T MEASURED AT THE NEW POSIOTIONS.

end

Answer 1

[Voss]

oldPosition = [-50; 50]; % Position A
Velocity = 2 % Velocity of object

Velocity = 2

angleoption = [-14.3239 -7.1620 -4.7746 1.4324 1.5915 1.7905 7.1620 14.3239]; % turning angles of object 

points_to_plot = [oldPosition zeros(2,numel(angleoption))];

for ii=1:numel(angleoption)

    pickangle11 = angleoption(ii) % select angle 
    mydir = [cosd(pickangle11(:)) .* Velocity; sind(pickangle11(:)) .* Velocity]; % rotated displacement
    newPosition  = oldPosition + mydir;     % position B
%     startPosition = newPosition  - mydir   % again return to the original position A
    
    oldPosition = newPosition;
    
    points_to_plot(:,ii+1) = newPosition;
end

pickangle11 = -14.3239

pickangle11 = -7.1620

pickangle11 = -4.7746

pickangle11 = 1.4324

pickangle11 = 1.5915

pickangle11 = 1.7905

pickangle11 = 7.1620

pickangle11 = 14.3239

plot(points_to_plot(1,:),points_to_plot(2,:),'o-')
axis equal

[omar th]

First, thank you for your reply. But I already plotted the new locations for each angle option, but I wanted to measure the X value at each point (new position)

[Voss]

If each new point is a length-2 vector, say "P", then the x-coordinate of that point is P(1).