ColorDendrogram: no visible global function definition for ‘plot’
ColorDendrogram: no visible global function definition for ‘segments’
GetUW: no visible global function definition for ‘rnorm’
GetUW: no visible global function definition for ‘as.dist’
HierarchicalSparseCluster: no visible binding for global variable ‘sd’
HierarchicalSparseCluster: no visible global function definition for
  ‘hclust’
HierarchicalSparseCluster: no visible global function definition for
  ‘as.dist’
HierarchicalSparseCluster: no visible global function definition for
  ‘cor’
HierarchicalSparseCluster.permute: no visible binding for global
  variable ‘sd’
HierarchicalSparseCluster.wrapper: no visible binding for global
  variable ‘var’
HierarchicalSparseCluster.wrapper: no visible global function
  definition for ‘write.table’
KMeansSparseCluster: no visible global function definition for ‘kmeans’
KMeansSparseCluster: no visible global function definition for ‘rnorm’
KMeansSparseCluster.permute: no visible binding for global variable
  ‘sd’
UpdateCs: no visible global function definition for ‘kmeans’
UpdateCs: no visible global function definition for ‘dist’
output.cluster.files.fun: no visible global function definition for
  ‘write.table’
output.matrix: no visible global function definition for ‘write.table’
plot.HierarchicalSparseCluster: no visible global function definition
  for ‘par’
plot.HierarchicalSparseCluster: no visible global function definition
  for ‘plot’
plot.HierarchicalSparseCluster.permute: no visible global function
  definition for ‘plot’
plot.HierarchicalSparseCluster.permute: no visible global function
  definition for ‘lines’
plot.KMeansSparseCluster: no visible global function definition for
  ‘par’
plot.KMeansSparseCluster: no visible global function definition for
  ‘plot’
plot.KMeansSparseCluster.permute: no visible global function definition
  for ‘plot’
plot.KMeansSparseCluster.permute: no visible global function definition
  for ‘lines’
read.gct: no visible global function definition for ‘read.table’
Undefined global functions or variables:
  as.dist cor dist hclust kmeans lines par plot read.table rnorm sd
  segments var write.table
Consider adding
  importFrom("graphics", "lines", "par", "plot", "segments")
  importFrom("stats", "as.dist", "cor", "dist", "hclust", "kmeans",
             "rnorm", "sd", "var")
  importFrom("utils", "read.table", "write.table")
to your NAMESPACE file.