.COL: no visible global function definition for 'is.leaf'
corLinkcommCentrality: no visible global function definition for 'lm'
corLinkcommCentrality: no visible global function definition for
  'abline'
corLinkcommCentrality: no visible global function definition for 'cor'
cutDendrogramAt: no visible global function definition for
  'as.dendrogram'
cutDendrogramAt: no visible global function definition for
  'colorRampPalette'
cutDendrogramAt: no visible global function definition for 'dendrapply'
cutDendrogramAt: no visible global function definition for 'abline'
cutDendrogramAt: no visible global function definition for 'mtext'
getClusterRelatedness: no visible global function definition for
  'as.dist'
getClusterRelatedness: no visible global function definition for
  'hclust'
getLinkCommunities: no visible global function definition for 'as.dist'
getLinkCommunities: no visible global function definition for 'hclust'
getLinkCommunities: no visible global function definition for 'par'
getLinkCommunities: no visible global function definition for 'abline'
getLinkCommunities: no visible global function definition for 'lines'
layout.spencer.circle: no visible global function definition for
  'runif'
meta.communities: no visible global function definition for 'hclust'
meta.communities: no visible global function definition for 'as.dist'
plotLinkCommDend: no visible global function definition for
  'as.dendrogram'
plotLinkCommDend: no visible global function definition for
  'colorRampPalette'
plotLinkCommDend: no visible global function definition for
  'dendrapply'
plotLinkCommDend: no visible global function definition for 'abline'
plotLinkCommDend: no visible global function definition for 'mtext'
plotLinkCommGraph: no visible global function definition for
  'colorRampPalette'
plotLinkCommGraph: no visible global function definition for 'dev.hold'
plotLinkCommGraph: no visible global function definition for
  'dev.flush'
plotLinkCommGraph: no visible global function definition for 'par'
plotLinkCommGraph: no visible global function definition for 'polygon'
plotLinkCommGraph: no visible global function definition for 'text'
plotLinkCommGraph: no visible global function definition for 'points'
plotLinkCommMembers: no visible global function definition for
  'colorRampPalette'
plotLinkCommSumm: no visible global function definition for 'par'
plotLinkCommSumm: no visible global function definition for
  'as.dendrogram'
plotLinkCommSumm: no visible global function definition for
  'colorRampPalette'
plotLinkCommSumm: no visible global function definition for
  'dendrapply'
plotLinkCommSumm: no visible global function definition for 'plot.new'
plotLinkCommSummComm: no visible global function definition for
  'colorRampPalette'
plotLinkCommSummComm: no visible global function definition for
  'barplot'
plotLinkCommSummComm: no visible global function definition for
  'abline'
plotOCGraph: no visible global function definition for
  'colorRampPalette'
plotOCGraph: no visible global function definition for 'dev.hold'
plotOCGraph: no visible global function definition for 'dev.flush'
plotOCGraph: no visible global function definition for 'polygon'
plotOCGraph: no visible global function definition for 'text'
Undefined global functions or variables:
  abline as.dendrogram as.dist barplot colorRampPalette cor dendrapply
  dev.flush dev.hold hclust is.leaf lines lm mtext par plot.new points
  polygon runif text
Consider adding
  importFrom("grDevices", "colorRampPalette", "dev.flush", "dev.hold")
  importFrom("graphics", "abline", "barplot", "lines", "mtext", "par",
             "plot.new", "points", "polygon", "text")
  importFrom("stats", "as.dendrogram", "as.dist", "cor", "dendrapply",
             "hclust", "is.leaf", "lm", "runif")
to your NAMESPACE file.