boxplot.biom: no visible global function definition for 'split.screen'
boxplot.biom: no visible global function definition for 'screen'
boxplot.biom: no visible global function definition for 'close.screen'
dependencies: no visible global function definition for
  'chooseBioCmirror'
dependencies: no visible global function definition for
  'chooseCRANmirror'
dependencies: no visible global function definition for
  'setRepositories'
dependencies: no visible global function definition for
  'install.packages'
hazPackages: no visible global function definition for
  'packageDescription'
image.biom: no visible global function definition for 'rgb'
image.biom: no visible global function definition for 'colorRamp'
parAuto: no visible global function definition for 'colors'
princomp.biom: no visible binding for global variable 'plot'
princomp.biom: no visible binding for global variable 'points'
princomp.biom: no visible global function definition for 'abline'
princomp.biom: no visible global function definition for 'grid'
princomp.biom: no visible binding for global variable 'text'
readSet: no visible global function definition for 'read.table'
rowstats.matrix : <anonymous>: no visible global function definition
  for 't.test'
rowstats.matrix : <anonymous>: no visible global function definition
  for 'wilcox.test'
rowstats.matrix : <anonymous>: no visible global function definition
  for 'kruskal.test'
rowstats.matrix : <anonymous>: no visible global function definition
  for 'anova'
rowstats.matrix : <anonymous>: no visible global function definition
  for 'aov'
rowstats.matrix: no visible binding for global variable 'sd'
seeDoc: no visible global function definition for 'browseURL'
t_ColScale: no visible binding for global variable 'sd'
tagline: no visible global function definition for 'packageVersion'
Undefined global functions or variables:
  abline anova aov browseURL chooseBioCmirror chooseCRANmirror
  close.screen colorRamp colors grid install.packages kruskal.test
  packageDescription packageVersion plot points read.table rgb screen
  sd setRepositories split.screen t.test text wilcox.test
Consider adding
  importFrom("grDevices", "colorRamp", "colors", "rgb")
  importFrom("graphics", "abline", "close.screen", "grid", "plot",
             "points", "screen", "split.screen", "text")
  importFrom("stats", "anova", "aov", "kruskal.test", "sd", "t.test",
             "wilcox.test")
  importFrom("utils", "browseURL", "chooseBioCmirror",
             "chooseCRANmirror", "install.packages",
             "packageDescription", "packageVersion", "read.table",
             "setRepositories")
to your NAMESPACE file.