def initialize(options={})
      @rot_x, @h_percent, @rot_y, @depth_percent, @r_ang_ax, @perspective  = nil, nil, nil, nil, nil, nil
      parse_options options
    end
Creates a new View3D for charts
@option options [Integer] rot_x
@option options [String] h_percent
@option options [Integer] rot_y
@option options [String] depth_percent
@option options [Boolean] r_ang_ax
@option options [Integer] perspective