Rectangular Box plotting from four co-ordinate

Hi, I am trying to plot a rectangular box in a xlim([0 25]) ylim([0 25]). I have co-ordinate values of four point and tried following code:

x_points = [x1 x2 x3 x4];

y_points = [y1 y2 y3 y4];

caustom_plot=plot(x_points,y_points,'k','Linewidth',2);

It shows a rectangular shape but one side is open. How can i fix the issue?

Answer 1

[Chunru]

caustom_plot=plot(x_points([1:end 1]),y_points([1:end 1]),'k','Linewidth',2);