Aircraft center of gravity, moving passengers one by one

Hi guys,

It's me again and I have the following code which I received a lot of help from here.

airlinerows = 30;
airlinehalfsideseats = 3;
occupacyfactor = 0.85;
rightside = double(rand(airlinerows,airlinehalfsideseats) < occupacyfactor);
%sum(sum(rightside))
%rightside
middleasile = double(zeros(30,1));
leftside = double(rand(airlinerows,airlinehalfsideseats) < occupacyfactor);
passengermap = [leftside,middleasile,rightside];
[rows,columns] = size(passengermap);
passengerweights = double(50 + 30*(rand(size(passengermap))));
luggageweights = double(5 + 2*(rand(size(passengermap))));
passengerweights = passengerweights.*passengermap
luggageweights = luggageweights.*passengermap
xcogattime = zeros(180,1);
ycogattime = zeros(180,1);
 %passengerweights
timepoint = 1;
for row = 1 : rows
    % First assume that the left side empties first.
    % Start with seat 3, then 2, then 1
    for col = 3 : -1 : 1
        %passengermap(row, 3) = 0; % Empty the aisle seat only
        % Remaining passengers shift to the right
        % After the aisle passenger has left, and remaining passengers has shifted right
        passengermap(row, 3) = passengermap(row,2);
        passengermap(row, 2) = passengermap(row,1);
        passengermap(row, 1) = 0.0;
        passengerweights(row, 3) = passengerweights(row,2);
        passengerweights(row, 2) = passengerweights(row,1);
        passengerweights(row, 1) = 0.0;
        luggageweights(row, 3) = passengerweights(row,2);
        luggageweights(row, 2) = passengerweights(row,1);
        luggageweights(row, 1) = 0.0;
        % Update passenger weight and luggage weight.
        passengerweights = passengerweights .* passengermap;
        luggageweights = luggageweights .* passengermap;
%         fprintf(fileID,passengermap);
        %re-compute center of gravity.
         xcogattime(timepoint) = findxcog(passengermap,passengerweights, luggageweights);
         ycogattime(timepoint) = findycog(passengermap,passengerweights, luggageweights);
        timepoint = timepoint + 1;
    end
    % Now empty the right side.
    % Start with seat in column 5, then 6, and then finally 7
    for col = 5 : 7
        %passengermap(row, 5) = 0; % Empty the aisle seat only
        % Remaining passengers shift to the right
        % After the aisle passenger has left, and remaining passengers has shifted right
        passengermap(row, 5) = passengermap(row,6);
        passengermap(row, 6) = passengermap(row,7);
        passengermap(row, 7) = 0.0;
        passengerweights(row, 5) = passengerweights(row,6);
        passengerweights(row, 6) = passengerweights(row,7);
        passengerweights(row, 7) = 0.0;
        luggageweights(row, 5) = passengerweights(row,6);
        luggageweights(row, 6) = passengerweights(row,7);
        luggageweights(row, 7) = 0.0;
        % Update passenger weight and luggage weight.
        passengerweights = passengerweights .* passengermap;
%         fprintf(fileID,passengermap);
        luggageWeights = luggageweights .* passengermap;
        %re-compute center of gravity.= findcog(passengerMap,passengerWeights, luggageWeights);
         x = findxcog(passengermap,passengerweights, luggageweights);
         xcogattime(timepoint) = x;
         y = findycog(passengermap,passengerweights, luggageweights);
         ycogattime(timepoint) = y;
         timepoint = timepoint + 1;
    end
end
for i = 1:180
    S=sprintf('(X,Y) Coord of COG at timepoint %i are: (%f , %f)\n',i,round(xcogattime(i),3),round(ycogattime(i),3));
    disp(S);
end
[xcogattime,ycogattime]
%imshow(passengermap);
plot(xcogattime, ycogattime);

when I run the code it gives me the CoG with respect to time. I get the CoG in the x and y-direction but I would like to perform the following:

I would like to move the passengers from the seats into the middle of the aircraft and then out of the aircraft. So the CoG in the y-direction stays around the 15th column.

What do I need to do this code in order to make the passengers get out of their seats and leave one by one?

Any help!!!!!!!!!!!!!!!!!!!