ht: no visible binding for global variable 'dist'
ht: no visible binding for global variable 'hclust'
ht : <anonymous>: no visible global function definition for 'reorder'
ht: no visible global function definition for 'as.dendrogram'
ht: no visible global function definition for 'order.dendrogram'
ht: no visible binding for global variable 'sd'
ht: no visible global function definition for 'par'
ht: no visible global function definition for 'layout'
ht: no visible global function definition for 'image'
ht: no visible global function definition for 'points'
ht: no visible global function definition for 'axis'
ht: no visible global function definition for 'mtext'
ht: no visible global function definition for 'plot'
ht: no visible global function definition for 'frame'
ht: no visible global function definition for 'title'
loadings.plot: no visible global function definition for 'plot'
loadings.plot: no visible global function definition for 'text'
loadings.plot: no visible global function definition for 'abline'
loadings.plot : <anonymous>: no visible global function definition for
  'text'
loadings.plot : <anonymous>: no visible global function definition for
  'abline'
mppca.loadings.plot: no visible global function definition for 'plot'
mppca.loadings.plot: no visible global function definition for 'text'
mppca.loadings.plot: no visible global function definition for 'abline'
mppca.loadings.plot : <anonymous>: no visible global function
  definition for 'text'
mppca.loadings.plot : <anonymous>: no visible global function
  definition for 'abline'
mppca.metabol: no visible global function definition for 'cmdscale'
mppca.metabol: no visible global function definition for 'dist'
mppca.metabol: no visible global function definition for 'cov'
mppca.metabol: no visible global function definition for 'rnorm'
mppca.metabol: no visible global function definition for 'plot'
mppca.metabol: no visible global function definition for 'abline'
mppca.scores.plot: no visible global function definition for 'plot'
mppca.scores.plot: no visible global function definition for 'legend'
mppca.scores.plot: no visible global function definition for 'abline'
mppca.scores.plot: no visible global function definition for 'points'
ppca.metabol: no visible global function definition for 'cmdscale'
ppca.metabol: no visible global function definition for 'dist'
ppca.metabol: no visible global function definition for 'plot'
ppca.metabol: no visible global function definition for 'abline'
ppca.metabol.jack: no visible binding for global variable 'var'
ppca.metabol.jack: no visible global function definition for 'qnorm'
ppca.metabol.jack: no visible global function definition for 'plot'
ppca.scores.plot: no visible global function definition for 'plot'
ppca.scores.plot: no visible global function definition for 'legend'
ppca.scores.plot: no visible global function definition for 'abline'
ppca.scores.plot: no visible global function definition for 'points'
ppcca.metabol: no visible global function definition for 'glm'
ppcca.metabol: no visible binding for global variable 'gaussian'
ppcca.metabol: no visible global function definition for 'plot'
ppcca.metabol: no visible global function definition for 'abline'
ppcca.metabol.jack: no visible binding for global variable 'var'
ppcca.metabol.jack: no visible global function definition for 'qnorm'
ppcca.metabol.jack: no visible global function definition for 'plot'
ppcca.scores.plot: no visible global function definition for 'plot'
ppcca.scores.plot: no visible global function definition for 'legend'
ppcca.scores.plot: no visible global function definition for 'abline'
ppcca.scores.plot: no visible global function definition for 'points'
scaling: no visible binding for global variable 'sd'
scaling: no visible binding for global variable 'var'
Undefined global functions or variables:
  abline as.dendrogram axis cmdscale cov dist frame gaussian glm hclust
  image layout legend mtext order.dendrogram par plot points qnorm
  reorder rnorm sd text title var
Consider adding
  importFrom("graphics", "abline", "axis", "frame", "image", "layout",
             "legend", "mtext", "par", "plot", "points", "text", "title")
  importFrom("stats", "as.dendrogram", "cmdscale", "cov", "dist",
             "gaussian", "glm", "hclust", "order.dendrogram", "qnorm",
             "reorder", "rnorm", "sd", "var")
to your NAMESPACE file.