title: How to change marker style in polar plot with octave?
body: <p>I am trying to change the <strong>appearance of the markers</strong> in a <strong>polar</strong> plot in <strong>octave</strong>.</p>
  <pre><code>r = rand(1,10); % the radius
  t = 30*rand(1,10); % the angles
  polar(t,r,'o') % the plot
  </code></pre>
  <p>It seems we can only change the shape, by replacing 'o' by 's' or whatever.
  However, I didn't find a way to change the size and the colors of the markers.
  Does anyone have an idea?</p>
  <p>Thanks in advance.
  Best,</p>