need help to write a program to draw the rectangle decrived down below.

rect1.x = 30; % x-coordinate of the lower left corner

rect1.y = 30; % y-coordinate of the lower left corner

rect1.width = 500;

rect1.height= 400;

rect1.color = 'b';

% Rectangle 2

rect2.x = 350; % x-coordinate of the lower left corner

rect2.y = 300; % y-coordinate of the lower left corner

rect2.width = 220;

rect2.height= 250;

rect2.color = 'r';

% Rectangle 3

rect3.x = 300; % x-coordinate of the lower left corner

rect3.y = 250; % y-coordinate of the lower left corner

rect3.width = 150;

rect3.height= 400;

rect3.color = 'c';

rect1.x = 30; % x-coordinate of the lower left corner

rect1.y = 30; % y-coordinate of the lower left corner

rect1.width = 500;

rect1.height= 400;

rect1.color = 'b';

% Rectangle 2

rect2.x = 350; % x-coordinate of the lower left corner

rect2.y = 300; % y-coordinate of the lower left corner

rect2.width = 220;

rect2.height= 250;

rect2.color = 'r';

% Rectangle 3

rect3.x = 300; % x-coordinate of the lower left corner

rect3.y = 250; % y-coordinate of the lower left corner

rect3.width = 150;

rect3.height= 400;

rect3.color = 'c';

[Enrique Vitela]

ignore the extra rectangle 3 and regtangle 2 typo

Answer 1

[Ameer Hamza]

Always use an array instead of naming the variable like rect1, rect2, .... It makes the code much simpler. Following code draw rectangles using patches

rect(1).x     =   30; % x-coordinate of the lower left corner
rect(1).y     =   30; % y-coordinate of the lower left corner
rect(1).width = 500;
rect(1).height= 400;
rect(1).color = 'b';
% Rectangle 2
rect(2).x     = 350; % x-coordinate of the lower left corner
rect(2).y     = 300; % y-coordinate of the lower left corner
rect(2).width = 220;
rect(2).height= 250;
rect(2).color = 'r';
% Rectangle 3
rect(3).x     = 300; % x-coordinate of the lower left corner
rect(3).y     = 250; % y-coordinate of the lower left corner
rect(3).width = 150;
rect(3).height= 400;
rect(3).color = 'c';

figure;
axes();
hold on
for i=1:numel(rect)
    r = rect(i);
    rect_x = [r.x r.x+r.width r.x+r.width r.x];
    rect_y = [r.y r.y r.y+r.height r.y+r.height];
    patch(rect_x, rect_y, r.color);
end