get(x,y) coordinates from rectangle function in matlab

Hi, I use rectangle function to draw a rectangle with two ends curved using following codes:

Rec = rectangle('Position',[1,1,10,5],'Curvature',1);

Will it be possible to get the (x,y) coordinate matrix of Rec?? Thanks for the help.

Answer 1

[Walter Roberson]

What is "the (x,y) coordinate matrix" of Rec ?

You can get() the Position property of Rec to retrieve the [1,1,10,5]

[Tai-Yen Chen]

Hi Walter, What I want is to get the x array and y array so that when I use plot(x,y,'o'), the same rectangle can be ploted out. Hope this clarify what I want.

[Walter Roberson]

pos = get(Rec, 'Position');
x = [pos(1)+0, pos(1)+pos(3), pos(1)+pos(3), pos(1)+0, pos(1)+0];
y = [pos(2)+0, pos(2)+0, pos(2)+pos(4), pos(2)+pos(4), pos(2)+0];
plot(x,y,'o');

[Tai-Yen Chen]

Hi Walter, This did not provide the feature of the curved part though. I think I address my question more precisely as how to get the xy of a "curved rectangle"

[Walter Roberson]

Sorry, I did not notice about that.

I do not know of any method to extract the coordinates. There might be one that is not obvious, but I cannot test that at this time.

Answer 2

[Ana Gonçalves]

To get the coordinates, just follow the index of the array:

r = rectangle('Position',[20 -3 10 10]);

r.Position(1) % x value

ans = 20

r.Position(2) % y value

ans = -3