.thetaISE : ISE: no visible global function definition for
  'weighted.mean'
.thetaISE : localOptimize: no visible global function definition for
  'optimize'
.thetaPDC : ISE: no visible global function definition for
  'weighted.mean'
.thetaPDC : localOptimize: no visible global function definition for
  'optimize'
.thetaWML : localUniroot: no visible global function definition for
  'uniroot'
arpr: no visible global function definition for 'aggregate'
bootVar.indicator: no visible global function definition for 'runif'
eqInc: no visible global function definition for 'aggregate'
fitPareto: no visible global function definition for 'runif'
genderGap: no visible global function definition for 'weighted.mean'
gini: no visible global function definition for 'aggregate'
gpg: no visible global function definition for 'aggregate'
meanExcessPlot: no visible global function definition for 'par'
meanExcessPlot: no visible global function definition for 'quantile'
meanExcessPlot : meanExcess: no visible global function definition for
  'weighted.mean'
meanExcessPlot : localPlot: no visible global function definition for
  'plot'
meanExcessPlot: no visible global function definition for 'identify'
meanExcessPlot: no visible global function definition for 'abline'
paretoQPlot: no visible global function definition for 'par'
paretoQPlot : localPlot: no visible global function definition for
  'plot'
paretoQPlot: no visible global function definition for 'identify'
paretoQPlot: no visible global function definition for 'abline'
plot.paretoTail: no visible global function definition for 'abline'
prop: no visible global function definition for 'aggregate'
qpareto: no visible global function definition for 'qexp'
qsr: no visible global function definition for 'aggregate'
rmpg: no visible global function definition for 'aggregate'
rpareto: no visible global function definition for 'runif'
weightedMean: no visible global function definition for 'weighted.mean'
Undefined global functions or variables:
  abline aggregate identify optimize par plot qexp quantile runif
  uniroot weighted.mean
Consider adding
  importFrom("graphics", "abline", "identify", "par", "plot")
  importFrom("stats", "aggregate", "optimize", "qexp", "quantile",
             "runif", "uniroot", "weighted.mean")
to your NAMESPACE file.