Question

How would I go about making a simple code for an analog clock using matlab?

Answer 1

First of all, choose a Circle with any diameter, say 20 units to draw the outer circle of a clock.drawn. Mark hours from 1 to 12, 30° apart. Read system time by the command. According to the current time of your system, the hours, minutes and seconds hands will be displayed.

Code:

clc;clear;clf;
format shortg;
x=0;y=0;r=10;
hold on;
th = 0:pi/50:2*pi;
xunit = r * cos(th) + x;
yunit = r * sin(th) + y;
h = plot(xunit,yunit);
r=8; s=[1];
for th = pi/6: pi/6: 2*pi
ytemp = r * cos(th);
xtemp = r * sin(th);  
text(xtemp,ytemp,num2str(s));
s = s+1;
end
while(1)
c = clock;
c = c(1,4:6);
min =c(1,2); sec=c(1,3);
if (c(1,1)>12)  
hr = c(1,1)-12;
else
hr = c(1,1);
end
min1 = ceil(min/12);
theta = (hr*pi)/6 + (min1*pi)/30;
f=figure(1); hold on;
ytemp = 3 * cos(theta); Y = [0 ytemp];
xtemp = 3 * sin(theta); X = [0 xtemp];
p=plot(X,Y);hold on;
theta1 = (min*pi)/30;
ytemp1 = 5 * cos(theta1); Y1 = [0 ytemp1];
xtemp1 = 5 * sin(theta1); X1 = [0 xtemp1];
p1=plot(X1,Y1);
theta2 = (sec*pi)/30;
ytemp2 = 7 * cos(theta2); Y2 = [0 ytemp2];
xtemp2 = 7 * sin(theta2); X2 = [0 xtemp2];
p2=plot(X2,Y2);
pause(1);
delete(p2);
delete(p1);
delete(p);
end

Output: