.xlim: no visible global function definition for ‘par’
.ylim: no visible global function definition for ‘par’
getalst: no visible global function definition for ‘recordPlot’
in.zoom: no visible global function definition for ‘locator’
inout.zoom: no visible global function definition for ‘locator’
is.locator: no visible global function definition for ‘sessionInfo’
is.out.of.plot.click: no visible global function definition for ‘par’
is.plot.window: no visible global function definition for ‘sessionInfo’
move.to.click.zoom: no visible global function definition for ‘locator’
navigation.zoom: no visible global function definition for ‘dev.cur’
navigation.zoom: no visible global function definition for
  ‘getGraphicsEvent’
navigation.zoom: no visible global function definition for ‘recordPlot’
orig.zoom: no visible global function definition for ‘replayPlot’
other.option.session.message: no visible global function definition for
  ‘dev.cur’
out.zoom: no visible global function definition for ‘locator’
pdf.zoom: no visible binding for global variable ‘pdf’
png.zoom: no visible global function definition for ‘dev.size’
png.zoom: no visible binding for global variable ‘png’
print.zoom: no visible binding for global variable ‘pdf’
print.zoom: no visible global function definition for ‘dev.print’
print.zoom: no visible global function definition for ‘dev.size’
replot: no visible global function definition for ‘recordPlot’
replot: no visible global function definition for ‘dev.cur’
replot: no visible global function definition for ‘replayPlot’
replot: no visible global function definition for ‘dev.off’
session.zoom: no visible global function definition for ‘recordPlot’
setCallBack: no visible global function definition for ‘recordPlot’
setCallBack : dragmousemove: no visible global function definition for
  ‘grconvertX’
setCallBack : dragmousemove: no visible global function definition for
  ‘grconvertY’
setCallBack : zoomDyn: no visible global function definition for ‘par’
setCallBack : zoomDyn: no visible global function definition for
  ‘grconvertY’
setCallBack : zoomDyn: no visible global function definition for
  ‘grconvertX’
setCallBack : mouseDownNavig: no visible global function definition for
  ‘par’
setCallBack : keydown: no visible global function definition for
  ‘setGraphicsEventEnv’
setCallBack: no visible global function definition for
  ‘setGraphicsEventHandlers’
setCallBack: no visible global function definition for
  ‘getGraphicsEventEnv’
setCallBack : devset: no visible global function definition for
  ‘dev.cur’
setCallBack : devset: no visible global function definition for
  ‘dev.set’
sq.zoom: no visible global function definition for ‘locator’
zoomplot.zoom: no visible global function definition for ‘recordPlot’
zoomplot.zoom: no visible global function definition for ‘box’
Undefined global functions or variables:
  box dev.cur dev.off dev.print dev.set dev.size getGraphicsEvent
  getGraphicsEventEnv grconvertX grconvertY locator par pdf png
  recordPlot replayPlot sessionInfo setGraphicsEventEnv
  setGraphicsEventHandlers
Consider adding
  importFrom("grDevices", "dev.cur", "dev.off", "dev.print", "dev.set",
             "dev.size", "getGraphicsEvent", "getGraphicsEventEnv",
             "pdf", "png", "recordPlot", "replayPlot",
             "setGraphicsEventEnv", "setGraphicsEventHandlers")
  importFrom("graphics", "box", "grconvertX", "grconvertY", "locator",
             "par")
  importFrom("utils", "sessionInfo")
to your NAMESPACE file.