RiverAxisLabel: no visible global function definition for 'text'
RiverBar: no visible global function definition for 'points'
RiverBar: no visible global function definition for 'rect'
RiverBar: no visible global function definition for 'text'
RiverBlock: no visible global function definition for 'points'
RiverBlock: no visible global function definition for 'rect'
RiverBlock: no visible global function definition for 'text'
RiverBlockChart: no visible global function definition for 'par'
RiverBlockChart: no visible global function definition for 'plot.new'
RiverBlockChart: no visible global function definition for 'rect'
RiverBlockChart: no visible global function definition for 'text'
RiverDirection: no visible global function definition for 'locator'
RiverDirection: no visible global function definition for 'arrows'
RiverDirection: no visible global function definition for 'text'
RiverDraw: no visible global function definition for 'par'
RiverDraw: no visible global function definition for 'plot.new'
RiverDraw: no visible global function definition for 'rect'
RiverDraw: no visible global function definition for 'segments'
RiverDraw: no visible global function definition for 'points'
RiverFrame: no visible global function definition for 'rect'
RiverFrame: no visible global function definition for 'segments'
RiverFrame: no visible global function definition for 'points'
RiverLabel: no visible global function definition for 'text'
RiverMap: no visible global function definition for 'par'
RiverMap: no visible global function definition for 'plot.new'
RiverMap: no visible global function definition for 'rect'
RiverMap: no visible global function definition for 'segments'
RiverMap: no visible global function definition for 'points'
RiverPoint: no visible global function definition for 'points'
RiverPoint: no visible global function definition for 'text'
RiverReach: no visible global function definition for 'rect'
RiverReach: no visible global function definition for 'segments'
RiverReach: no visible global function definition for 'points'
RiverScale: no visible global function definition for 'locator'
RiverScale: no visible global function definition for 'segments'
RiverScale: no visible global function definition for 'text'
RiverSite: no visible global function definition for 'points'
RiverSite: no visible global function definition for 'text'
RiverTM: no visible global function definition for 'segments'
RiverTM: no visible global function definition for 'text'
Undefined global functions or variables:
  arrows locator par plot.new points rect segments text
Consider adding
  importFrom("graphics", "arrows", "locator", "par", "plot.new",
             "points", "rect", "segments", "text")
to your NAMESPACE file.