How to plot rectangles using variables

I'm trying to plot several rectangles with data from an array, and i can't quite figure out how to plot this way

The code i've been trying:

T = testarray;

x1 = T(1:216,1);

y1 = T(1:216,2);

w1 = T(1:216,3);

h1 = T(1:216,4);

x = table2array(x1);

y = table2array(y1);

w = table2array(w1);

h = table2array(h1);

rectangle('Position',[x(1:216,1) y(1:216,1) w(1:216,1) h(1:216,1)])

axis([-1 2 -1 2])

Any idea what i'm doing wrong? I keep getting the error "Error using rectangle

Value must be a 4 element vector"

Answer 1

[the cyclist]

Are you trying to plot 216 rectangle with that one line? If you look at the documentation, you will see that you cannot do that. It is expecting a single 4-element vector, not an array.

You need to loop over your arrays. (If that is, indeed, what you are trying to do.) Here is how you can do that. I just used 6 rectangles, and pretend data.

N = 6;

testarray = array2table(rand(N,4));

T = testarray;
x1 = T(1:N,1);
y1 = T(1:N,2);
w1 = T(1:N,3);
h1 = T(1:N,4);
x = table2array(x1);
y = table2array(y1);
w = table2array(w1);
h = table2array(h1);

figure
hold on

for nr = 1:N
    rectangle('Position',[x(nr) y(nr) w(nr) h(nr)])
    axis([-1 2 -1 2])
end

[Nathaniel]

Thank you so much, that works!

Sorry for the inconvienience