fem.estep: no visible global function definition for ‘ginv’
fem.loglik: no visible global function definition for ‘ginv’
fem.main: no visible global function definition for ‘cutree’
fem.main: no visible global function definition for ‘hclust’
fem.main: no visible global function definition for ‘dist’
fem.main: no visible global function definition for ‘rmultinom’
fem.main: no visible global function definition for ‘kmeans’
fem.mstep: no visible global function definition for ‘cov’
fstep.GramSc: no visible global function definition for ‘cov’
fstep.GramSc: no visible global function definition for ‘ginv’
fstep.fisher: no visible global function definition for ‘ginv’
fstep.fisher: no visible global function definition for ‘dist’
fstep.qiao: no visible global function definition for ‘ginv’
fstep.qiao: no visible global function definition for ‘cov’
fstep.qiao: no visible global function definition for ‘lsfit’
fstep.sparse: no visible global function definition for ‘ginv’
fstep.sparse: no visible global function definition for ‘cov’
fstep.sparse: no visible global function definition for ‘enet’
fstep.sparse: no visible global function definition for ‘predict.enet’
plot.fem: no visible global function definition for ‘par’
plot.fem: no visible global function definition for ‘matplot’
plot.fem: no visible global function definition for ‘legend’
plot.fem: no visible global function definition for ‘hist’
plot.fem: no visible global function definition for ‘layout’
plot.fem: no visible global function definition for ‘barplot’
plot.fem: no visible global function definition for ‘cov’
plot.fem: no visible global function definition for ‘lines’
plot.fem: no visible global function definition for ‘title’
Undefined global functions or variables:
  barplot cov cutree dist enet ginv hclust hist kmeans layout legend
  lines lsfit matplot par predict.enet rmultinom title
Consider adding
  importFrom("graphics", "barplot", "hist", "layout", "legend", "lines",
             "matplot", "par", "title")
  importFrom("stats", "cov", "cutree", "dist", "hclust", "kmeans",
             "lsfit", "rmultinom")
to your NAMESPACE file.