         @title_props.set(@ctx, {})
         @ctx.fillText(title, sx, sy)
 
-    render_overlays : (have_new_mapper_state) ->
+    render_overlays: (have_new_mapper_state) ->
       for level in ['overlay', 'annotation', 'tool']
         renderers = @levels[level]
         for k, v of renderers
           v.render(have_new_mapper_state)
-      
+
   class Plot extends HasParent
     type: 'Plot'
     default_view: PlotView

      @bind_bokeh_events()
      return this

    map_to_screen: (x, x_units, y, y_units, units) ->
      if x_units == 'screen'
        if _.isArray(x)


    map_from_screen: (sx, sy, units) ->
      if _.isArray(sx)
        dx = sx[..]
      else
        dx = new Float64Array(sx.length)
        dx.set(x)
      if _.isArray(sy)
        dy = sy[..]
      else
        dy = new Float64Array(sy.length)
        dy.set(y)
