clear;clc;close x = zeros(32,32); a = 1; x(6,5)=a; x(6,28)=a; x(7,4:6)=a; x(7,27:29)=a; x(8,3:7)=a; x(8,26:30)=a; x(9,3:8)=a; x(9,25:30)=a; x(10,2:9)=a; x(10,24:31)=a; x(11,2:10)=a; x(11,23:31)=a; x(12,2:11)=a; x(12,22:30)=a; x(13,4:12)=a; x(13,21:29)=a; x(14,8:13)=a; x(14,20:25)=a; x(15,12:15)=a; x(15,18:21)=a; x(16,15:18)=a; x(17:21,16:17)=a; x(22:25,15:18)=a; x(26:29,14:19)=a; x(30:32,13:20)=a; imshow(x,[],'InitialMagnification','fit');