Question

Hello, i have this matlab code where i have to track a red ball from and uploaded video, and plot its direction in x-y direction

My Question is how can i add x vs time plot and y vs time plot in this code. Thank you

if exist('V','var')
delete(V);
end
clear;clc;

V=VideoReader('video.mp4');

figure(1);
x=[];y=[];
i=1;
while hasFrame(V)
J=readFrame(V);
figure(1);imshow(J);title(['Frame No. ',num2str(i)]);
if (i>=28 && i<=132)
bw=J(:,:,1)>200 & J(:,:,2)<80 & J(:,:,3)<80;
bw=imfill(bw,'holes');
A=regionprops(bw,'Centroid');
x(end+1)=A.Centroid(1);
y(end+1)=A.Centroid(2);
hold on;
plot(x,y,'*k');hold off;
end
i=i+1;
pause(1/V.FrameRate);
end
clc;
delete(V);

[m,n]=size(bw);
figure(2);
plot(x,y);axis ij image;grid on;
xlim([1,n]);ylim([1,m]);
xlabel('X (in px.)');
ylabel('Y (in px.)');

fprintf('Distance travelled in x (px.): %.0f\n', x(end)-x(1));
fprintf('Distance travelled in y (px.): %.0f\n', max(y)-min(y));