 
     if @plot_model.use_map
       if @_x?
-        [@_x, @_y] = @project_xy(@_x, @_y)
+        [@_x, @_y] = @_project_xy(@_x, @_y)
       if @_xs?
-        [@_xs, @_ys] = @project_xsys(@_xs, @_ys)
+        [@_xs, @_ys] = @_project_xsys(@_xs, @_ys)
 
     if @glglyph?
       @glglyph.set_data_changed(@_x.length)


    @_map_data()

  project_xy: (x, y) ->
    merc_x_s = []
    merc_y_s = []
    for i in [0...x.length]

      merc_y_s[i] = merc_y
    return [merc_x_s, merc_y_s]

  _project_xsys: (xs, ys) ->
    merc_xs_s = []
    merc_ys_s = []
    for i in [0...xs.length]
      [merc_x_s, merc_y_s] = @_project_xy(xs[i], ys[i])
      merc_xs_s[i] = merc_x_s
      merc_ys_s[i] = merc_y_s
    return [merc_xs_s, merc_ys_s]
