How can I plot in the same coordinate system this two images that the execution of the two codes below gives?

function h = circle(x,y,r) % r is 30 hold on th = 0:pi/50:2*pi; xunit = r * cos(th) + x; yunit = r * sin(th) + y; h = plot(xunit, yunit); hold off

AND

R = 15 ; Delta = 3; xVertex = R * cos((0:6)*pi/3 ); yVertex = R * sin((0:6)*pi/3 ); xVertex = [xVertex , xVertex(1 )]; yVertex = [yVertex , yVertex(1 )]; requiredPoints = 20 ; plot(xVertex, yVertex, 'b+-', 'LineWidth', 3 ); grid on ; numPointsIn = 1 ; while numPointsIn < requiredPoints testx = 2 * R * rand(1) - R ; testy = 2 * R * rand(1) - R ; if inpolygon(testx, testy, xVertex, yVertex ) x(numPointsIn) = testx ; y(numPointsIn) = testy ;

   D = x - R
   if D <= Delta
       Sc = x  
   end
numPointsIn = numPointsIn + 1 ; 
end 
end 
hold on ; 
plot(x,y,'r+', 'MarkerSize', 10, 'LineWidth', 2 ); 
yAngle = atan2(y, x) + pi
x

Answer 1

[RobF]

You might want to delete/comment out the hold off statement and try the following:

% circle(1, 2, 3)
x=1;
y=2;
r=3;

% function h = circle(x,y,r)
% r is 30
hold on
th = 0:pi/50:2*pi;
xunit = r * cos(th) + x;
yunit = r * sin(th) + y;
h = plot(xunit, yunit);

 % hold off

R = 15 ;
Delta = 3;
xVertex = R * cos((0:6)*pi/3 );
yVertex = R * sin((0:6)*pi/3 );
xVertex = [xVertex , xVertex(1 )];
yVertex = [yVertex , yVertex(1 )];
requiredPoints = 20;
plot(xVertex, yVertex, 'b+-', 'LineWidth', 3 );
grid on;
numPointsIn = 1;

while numPointsIn < requiredPoints
    testx = 2 * R * rand(1) - R ;
    testy = 2 * R * rand(1) - R ;
    if inpolygon(testx, testy, xVertex, yVertex )
        x(numPointsIn) = testx ;
        y(numPointsIn) = testy ;
        D = x - R
        if D <= Delta
            Sc = x
        end
    end
    numPointsIn = numPointsIn + 1 ; 
end
hold on; 
plot(x,y,'r+', 'MarkerSize', 10, 'LineWidth', 2 ); 
yAngle = atan2(y, x) + pi;
% end

[RobF]

function call:

x=1;
y=2;
r=3;
h=circle(x,y,r)

and remove the commenting:

 function h = circle(x,y,r)
 ...
 end