gap.default: no visible binding for global variable 'var'
gap.default: no visible global function definition for 'makeCluster'
gap.default: no visible global function definition for 'clusterEvalQ'
gap.default: no visible global function definition for 'clusterApply'
gap.default: no visible global function definition for 'runif'
gap.default: no visible global function definition for 'clusterCall'
gap.default: no visible global function definition for 'var'
gap.default: no visible global function definition for 'stopCluster'
gap.default: no visible global function definition for 'plot'
gap.genBox : <anonymous>: no visible global function definition for
  'runif'
lga.default: no visible binding for global variable 'var'
lga.default: no visible global function definition for 'makeCluster'
lga.default: no visible global function definition for 'clusterEvalQ'
lga.default: no visible global function definition for 'clusterApplyLB'
lga.default: no visible global function definition for 'stopCluster'
lga.default: no visible global function definition for 'complete.cases'
plot.gap: no visible global function definition for 'par'
plot.gap: no visible global function definition for 'plot'
plot.gap: no visible global function definition for 'points'
plot.gap: no visible global function definition for 'box'
plot.gap: no visible global function definition for 'axis'
plot.gap: no visible global function definition for 'arrows'
plot.lga: no visible global function definition for 'plot'
plot.lga: no visible global function definition for 'abline'
plot.lga: no visible global function definition for 'pairs'
rlga.default: no visible binding for global variable 'var'
rlga.default: no visible global function definition for 'makeCluster'
rlga.default: no visible global function definition for 'clusterEvalQ'
rlga.default: no visible global function definition for
  'clusterApplyLB'
rlga.default: no visible global function definition for 'stopCluster'
rlga.default: no visible global function definition for
  'complete.cases'
rlga.dodist: no visible global function definition for 'quantile'
Undefined global functions or variables:
  abline arrows axis box clusterApply clusterApplyLB clusterCall
  clusterEvalQ complete.cases makeCluster pairs par plot points
  quantile runif stopCluster var
Consider adding
  importFrom("graphics", "abline", "arrows", "axis", "box", "pairs",
             "par", "plot", "points")
  importFrom("stats", "complete.cases", "quantile", "runif", "var")
to your NAMESPACE file.