Gradient Descent in Linear Regression in MATLAB | m-file

%Code:

clc

clear all

close all

figure;

pause(4);

x=[1,2,4,3,5];

y=[1,3,3,2,5];

format long

m=0;

c=0;

plot(x,y,'bo','linewidth',3);

axis([0 6 0 8]);

hold on;

pause(1);

for h=1:4

for ua=1:length(x)

predicted=m*x+c;

s=y-predicted;

w=((sum(-2*x.*s))/length(x))*0.01;

m=m-w;

w=((sum(-2*s))/length(x))*0.01;

c=c-w;

     e=m*x+c;

    rs=plot(x,e,'k','linewidth',3);

    axis([0 6 0 8]);

    pause(0.3);

    if(h~=4 || ua~=length(x))

    delete(rs);

    end

end

end

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