... top x = i1:0.05:i2; line(x,j1,'Color','r','LineWidth' ,10 ); % ve bottom x = i1:0.05:i2; line(x,j2,'Color','r','LineWidth' ,10 ); ... left y = j1:0.05:j2; line(i1,y,'Color','r','LineWidth' ,10 ); % ve right y = j1:0.05:j2; line(i2,y,'Color','r','LineWidth' ,10 ); ... set(hand.btnConnect,'string','Disconnect'); set(hand.lblStatus,'string','Connected '); else set(hand.btnConnect,'string','Connect'); set(hand.lblStatus,'string','Not...