How i can make an animation mp4 for the graph?

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jakaria babar 2020-1-13

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/500134-how-i-can-make-an-animation-mp4-for-the-graph

I have found a point 'P(x,y)' connecting 3 points A(6,9),B(20,38),C(49,25) such that the total length PA+PB+PC is minimum by the code

M=500;%we take a fixed value of M
x=6:.01:49; % p is the domain of x
y=9:.01:38; % q is the domain of y
for i=1:length(x)
    for j=1:length(y)
        L=sqrt((x(i)-6)^2+(y(j)-9)^2)+sqrt((x(i)-20)^2+(y(j)-38)^2)+sqrt((x(i)-49)^2+(y(j)-25)^2);
        if L<M
            M=L;
            a=x(i);
            b=y(j);
           
        end
        
    end
    
end
[a,b]

P(x,y)=(23.1200 29.5000)

Then draw the figure of point P joint three point A,B,C

x = [6 20 49];
y = [9 38 25];
x0 = 23.1200;
y0 = 29.5000;
figure('color','white');
hold on;
for ipt = 1:length(x)
    plot([x(ipt) x0],[y(ipt) y0],'color',[0 0 1]);
    myChar = char(64+ipt);
    text(x(ipt)+0.5,y(ipt)+0.75,myChar);
end
plot(x,y,'P','markerfacecolor','k','markeredgecolor','none', ...
    'markersize',4);
plot(x0,y0,'P','markerfacecolor','k','markeredgecolor','none', ...
    'markersize',4);
text(x0+0.5,y0+0.75,'P');
xlabel('x');
ylabel('y');