 <p>Are you plotting one point at a time?</p> <p>Can you do something like this?</p> <pre><code>plot(x_coord, y_coord, 'k.', 'markersize', 20) </code></pre> <p>This provides a circle of points:</p> <pre><code>my_vector=0:0.1:2*pi; for ii = 1:length(my_vector) x = cos(ii); y = sin(ii); plot(x,y, 'k.', 'markersize', 10) hold on end </code></pre>