addRegime: no visible global function definition for 'abline'
collapseRegimes: no visible global function definition for 'abline'
convertBack: no visible global function definition for 'as'
convertTreeData: no visible global function definition for 'as'
getBranchTimes: no visible global function definition for 'as'
propRegMatch: no visible global function definition for 'as'
startingModel: no visible global function definition for 'var'
surfaceAICMultiPlot: no visible global function definition for 'points'
surfaceAICMultiPlot: no visible global function definition for 'abline'
surfaceAICPlot: no visible global function definition for 'rainbow'
surfaceAICPlot: no visible global function definition for 'abline'
surfaceAICPlot: no visible global function definition for 'points'
surfaceBackward: no visible global function definition for 'as'
surfaceForward: no visible global function definition for 'as'
surfaceSimulate : <anonymous>: no visible global function definition
  for 'sd'
surfaceSimulate: no visible global function definition for 'rnorm'
surfaceSimulate: no visible global function definition for 'runif'
surfaceSimulate: no visible global function definition for 'as'
surfaceSimulate: no visible global function definition for 'rmultinom'
surfaceTraitPlot: no visible global function definition for 'as'
surfaceTraitPlot: no visible global function definition for 'rainbow'
surfaceTraitPlot: no visible global function definition for 'grey'
surfaceTraitPlot: no visible global function definition for 'polygon'
surfaceTraitPlot: no visible global function definition for 'points'
surfaceTreePlot: no visible global function definition for 'as'
surfaceTreePlot: no visible global function definition for 'rainbow'
surfaceTreePlot: no visible global function definition for 'grey'
Undefined global functions or variables:
  abline as grey points polygon rainbow rmultinom rnorm runif sd var
Consider adding
  importFrom("grDevices", "grey", "rainbow")
  importFrom("graphics", "abline", "points", "polygon")
  importFrom("methods", "as")
  importFrom("stats", "rmultinom", "rnorm", "runif", "sd", "var")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').