.myCoef: no visible global function definition for ‘coef’
.qcDailyPrec: no visible global function definition for ‘sd’
.qcDailyTemp : <anonymous>: no visible global function definition for
  ‘sd’
BHRtest: no visible global function definition for ‘sd’
SNHtest: no visible global function definition for ‘sd’
createClimdex: no visible global function definition for ‘time’
evalHomogeneity,dataclim: no visible global function definition for
  ‘time’
evalHomogeneity,dataclim: no visible global function definition for
  ‘aggregate’
initialize,dataclim: no visible global function definition for
  ‘aggregate’
initialize,dataclim: no visible global function definition for ‘time’
plotWalterLieth,matrix: no visible global function definition for ‘par’
plotWalterLieth,matrix: no visible global function definition for
  ‘plot’
plotWalterLieth,matrix: no visible global function definition for
  ‘axis’
plotWalterLieth,matrix: no visible global function definition for
  ‘mtext’
plotWalterLieth,matrix: no visible global function definition for
  ‘abline’
plotWalterLieth,matrix: no visible global function definition for
  ‘polygon’
plotWalterLieth,matrix: no visible global function definition for
  ‘approx’
plotWalterLieth,matrix: no visible global function definition for
  ‘segments’
plotWalterLieth,matrix: no visible global function definition for
  ‘rect’
plotWalterLieth,matrix: no visible global function definition for
  ‘lines’
summary,dataclim: no visible binding for global variable ‘sd’
summary,dataclim: no visible binding for global variable ‘aggregate’
summary,dataclim: no visible global function definition for ‘time’
summary,dataclim : <anonymous>: no visible global function definition
  for ‘lm’
Undefined global functions or variables:
  abline aggregate approx axis coef lines lm mtext par plot polygon
  rect sd segments time
Consider adding
  importFrom("graphics", "abline", "axis", "lines", "mtext", "par",
             "plot", "polygon", "rect", "segments")
  importFrom("stats", "aggregate", "approx", "coef", "lm", "sd", "time")
to your NAMESPACE file.