iterationPlot.list: no visible global function definition for ‘plot’
scalingPlot: no visible global function definition for ‘plot’
Undefined global functions or variables:
  plot
Consider adding
  importFrom("graphics", "plot")
to your NAMESPACE file.
iterationPlot.list: no visible global function definition for 'plot'
scalingPlot: no visible global function definition for 'plot'
Undefined global functions or variables:
  plot
Consider adding
  importFrom("graphics", "plot")
to your NAMESPACE file.