calcAtkinson: no visible global function definition for
  ‘complete.cases’
calcAtkinson: no visible global function definition for ‘weighted.mean’
calcConc: no visible global function definition for ‘complete.cases’
calcConc: no visible global function definition for ‘weighted.mean’
calcConc: no visible global function definition for ‘coef’
calcConc: no visible global function definition for ‘lm’
calcGEI: no visible global function definition for ‘complete.cases’
calcGEI: no visible global function definition for ‘weighted.mean’
calcTheil0: no visible global function definition for ‘weighted.mean’
calcTheil1: no visible global function definition for ‘weighted.mean’
curveLoCo: no visible global function definition for ‘complete.cases’
curveLoCo: no visible global function definition for ‘weighted.mean’
curveLoCo: no visible global function definition for ‘abline’
curveLoCo: no visible global function definition for ‘lines’
decompAtkinson: no visible global function definition for
  ‘complete.cases’
decompAtkinson: no visible global function definition for
  ‘weighted.mean’
decompAtkinson : <anonymous>: no visible global function definition for
  ‘weighted.mean’
decompGEI: no visible global function definition for ‘complete.cases’
decompGEI: no visible global function definition for ‘weighted.mean’
decompGEI : <anonymous>: no visible global function definition for
  ‘weighted.mean’
decompSGini: no visible global function definition for ‘complete.cases’
decompSGini: no visible global function definition for ‘weighted.mean’
decompSGini : <anonymous>: no visible global function definition for
  ‘weighted.mean’
decompSGini: no visible global function definition for ‘coef’
decompSGini: no visible global function definition for ‘lm’
Undefined global functions or variables:
  abline coef complete.cases lines lm weighted.mean
Consider adding
  importFrom("graphics", "abline", "lines")
  importFrom("stats", "coef", "complete.cases", "lm", "weighted.mean")
to your NAMESPACE file.