 class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>lat</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>polyline</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>radius</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>radius_min_pixels</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>radius_max_pixels</span> <span class='kw'>=</span> <span class='kw'>NULL</span>