function [] = circleagain(a,b,c,r) pixel = 0.1 theta1 = 0 theta2 = 360*pi/180 pix = pixel/r theta = theta1:pix:theta2 global x y z x = a + r*cos(theta) y = b + r*sin(theta) z = ones(1,length(x))*c x=round(x*10)/10 y=ro