.lmBACON : GiveTis: no visible global function definition for ‘lm’
.lmBACON : GiveTis: no visible global function definition for
  ‘hatvalues’
.lmBACON: no visible global function definition for ‘qt’
L1median: no visible binding for global variable ‘median’
L1median: no visible global function definition for ‘nlm’
L1median: no visible global function definition for ‘optim’
L1median: no visible global function definition for ‘nlminb’
L1median : Tnew: no visible global function definition for ‘median’
covNNC : nclean.sub : NNdist: no visible global function definition for
  ‘dist’
covNNC: no visible binding for global variable ‘median’
covNNC: no visible binding for global variable ‘mad’
covNNC: no visible global function definition for ‘mahalanobis’
covNNC: no visible global function definition for ‘qchisq’
covNNC1 : nclean.sub : splusNN: no visible global function definition
  for ‘dist’
covNNC1: no visible binding for global variable ‘median’
covNNC1: no visible binding for global variable ‘mad’
covNNC1: no visible global function definition for ‘mahalanobis’
covNNC1: no visible global function definition for ‘qchisq’
mvBACON : chiCrit: no visible global function definition for ‘qchisq’
mvBACON: no visible global function definition for ‘var’
mvBACON: no visible global function definition for ‘mahalanobis’
mvBACON: no visible binding for global variable ‘median’
rbwheel: no visible binding for global variable ‘rnorm’
rbwheel : <anonymous>: no visible global function definition for
  ‘rchisq’
rbwheel : <anonymous>: no visible global function definition for
  ‘runif’
rbwheel: no visible global function definition for ‘cov’
Undefined global functions or variables:
  cov dist hatvalues lm mad mahalanobis median nlm nlminb optim qchisq
  qt rchisq rnorm runif var
Consider adding
  importFrom("stats", "cov", "dist", "hatvalues", "lm", "mad",
             "mahalanobis", "median", "nlm", "nlminb", "optim", "qchisq",
             "qt", "rchisq", "rnorm", "runif", "var")
to your NAMESPACE file.