heatmap.send: no visible binding for global variable 'dist'
heatmap.send: no visible binding for global variable 'hclust'
heatmap.send : <anonymous>: no visible global function definition for
  'reorder'
heatmap.send: no visible global function definition for 'heat.colors'
heatmap.send: no visible global function definition for 'as.dendrogram'
heatmap.send: no visible global function definition for
  'order.dendrogram'
heatmap.send: no visible binding for global variable 'sd'
heatmap.send.legacy: no visible binding for global variable 'dist'
heatmap.send.legacy: no visible binding for global variable 'hclust'
heatmap.send.legacy : <anonymous>: no visible global function
  definition for 'reorder'
heatmap.send.legacy: no visible global function definition for
  'as.dendrogram'
heatmap.send.legacy: no visible global function definition for
  'order.dendrogram'
heatmap.send.legacy: no visible binding for global variable 'sd'
makeImap: no visible global function definition for 'colors'
makeSplot: no visible global function definition for 'png'
makeSplot: no visible global function definition for 'dev.control'
makeSplot: no visible global function definition for 'layout'
makeSplot: no visible global function definition for 'par'
makeSplot: no visible global function definition for 'dev.copy'
makeSplot: no visible binding for global variable 'jpeg'
makeSplot: no visible global function definition for 'dev.off'
makeSplot: no visible binding for global variable 'tiff'
makeSplot: no visible binding for global variable 'postscript'
makeSplot: no visible global function definition for 'dev.copy2pdf'
makeSplot: no visible global function definition for 'jpeg'
mapMethod: no visible global function definition for 'median'
sendplot: no visible global function definition for 'png'
sendplot: no visible global function definition for 'postscript'
sendplot: no visible global function definition for 'layout'
sendplot: no visible global function definition for 'par'
sendplot: no visible global function definition for 'points'
sendplot: no visible global function definition for 'dev.off'
sendplot: no visible global function definition for 'median'
Undefined global functions or variables:
  as.dendrogram colors dev.control dev.copy dev.copy2pdf dev.off dist
  hclust heat.colors jpeg layout median order.dendrogram par png points
  postscript reorder sd tiff
Consider adding
  importFrom("grDevices", "colors", "dev.control", "dev.copy",
             "dev.copy2pdf", "dev.off", "heat.colors", "jpeg", "png",
             "postscript", "tiff")
  importFrom("graphics", "layout", "par", "points")
  importFrom("stats", "as.dendrogram", "dist", "hclust", "median",
             "order.dendrogram", "reorder", "sd")
to your NAMESPACE file.