figure108.wt.filter : draw.leftlabels: no visible global function
  definition for 'text'
figure108.wt.filter: no visible global function definition for 'plot'
figure108.wt.filter: no visible global function definition for 'axis'
figure108.wt.filter: no visible global function definition for 'par'
figure108.wt.filter: no visible global function definition for 'abline'
figure108.wt.filter: no visible global function definition for
  'segments'
figure108.wt.filter: no visible global function definition for 'points'
figure98.wt.filter : draw.leftlabels: no visible global function
  definition for 'text'
figure98.wt.filter: no visible global function definition for 'plot'
figure98.wt.filter: no visible global function definition for 'par'
figure98.wt.filter: no visible global function definition for 'axis'
figure98.wt.filter: no visible global function definition for 'axTicks'
figure98.wt.filter: no visible global function definition for 'lines'
figure98.wt.filter: no visible global function definition for 'abline'
plot.dwt : stackplot.dwt : innerplot: no visible global function
  definition for 'plot'
plot.dwt : stackplot.dwt : innerplot: no visible global function
  definition for 'axis'
plot.dwt : stackplot.dwt : innerplot: no visible global function
  definition for 'axTicks'
plot.dwt : stackplot.dwt : innerplot: no visible global function
  definition for 'par'
plot.dwt : stackplot.dwt: no visible global function definition for
  'layout'
plot.dwt : stackplot.dwt: no visible global function definition for
  'par'
plot.dwt : stackplot.dwt: no visible global function definition for
  'text'
plot.dwt : stackplot.dwt: no visible global function definition for
  'mtext'
plot.dwt.multiple : inner.plot.level: no visible global function
  definition for 'lines'
plot.dwt.multiple : inner.plot : draw.dash: no visible global function
  definition for 'abline'
plot.dwt.multiple : inner.plot : draw.level.labels: no visible global
  function definition for 'mtext'
plot.dwt.multiple : inner.plot: no visible global function definition
  for 'plot'
plot.dwt.multiple : inner.plot: no visible global function definition
  for 'axis'
plot.dwt.multiple : inner.plot: no visible global function definition
  for 'mtext'
plot.dwt.multiple : inner.plot: no visible global function definition
  for 'par'
plot.dwt.multiple: no visible global function definition for 'par'
plot.modwt : stackplot.modwt : innerplot: no visible global function
  definition for 'plot'
plot.modwt : stackplot.modwt : innerplot: no visible global function
  definition for 'axis'
plot.modwt : stackplot.modwt : innerplot: no visible global function
  definition for 'axTicks'
plot.modwt : stackplot.modwt : innerplot: no visible global function
  definition for 'par'
plot.modwt : stackplot.modwt: no visible global function definition for
  'layout'
plot.modwt : stackplot.modwt: no visible global function definition for
  'par'
plot.modwt : stackplot.modwt: no visible global function definition for
  'text'
plot.modwt : stackplot.modwt: no visible global function definition for
  'mtext'
squaredgain.wt.filter: no visible global function definition for 'fft'
squaredgain.wt.filter: no visible global function definition for 'plot'
squaredgain.wt.filter: no visible global function definition for
  'abline'
stackplot : innerstackplot: no visible global function definition for
  'plot'
stackplot : innerstackplot: no visible global function definition for
  'segments'
stackplot : innerstackplot: no visible global function definition for
  'lines'
stackplot : find.rightlabelpos: no visible global function definition
  for 'par'
stackplot : draw.rightlabels: no visible global function definition for
  'text'
stackplot : find.leftlabelpos: no visible global function definition
  for 'par'
stackplot : draw.leftlabels: no visible global function definition for
  'text'
stackplot : coercetomatrix: no visible global function definition for
  'start'
stackplot : coercetomatrix: no visible global function definition for
  'end'
stackplot: no visible global function definition for 'plot'
stackplot: no visible global function definition for 'axis'
stackplot: no visible global function definition for 'axTicks'
stackplot: no visible global function definition for 'abline'
stackplot: no visible global function definition for 'par'
Undefined global functions or variables:
  abline axTicks axis end fft layout lines mtext par plot points
  segments start text
Consider adding
  importFrom("graphics", "abline", "axTicks", "axis", "layout", "lines",
             "mtext", "par", "plot", "points", "segments", "text")
  importFrom("stats", "end", "fft", "start")
to your NAMESPACE file.