clines.plot: no visible global function definition for 'par'
clines.plot: no visible global function definition for 'title'
clines.plot: no visible global function definition for 'polygon'
clines.plot: no visible global function definition for 'lines'
clines.plot: no visible global function definition for 'points'
clines.plot: no visible global function definition for 'text'
clines.plot: no visible global function definition for 'axis'
clines.plot: no visible global function definition for 'hist'
clines.plot: no visible global function definition for 'box'
clines.plot: no visible global function definition for 'dev.off'
compare.clines: no visible global function definition for 'coef'
composite.clines: no visible global function definition for 'par'
composite.clines: no visible global function definition for 'polygon'
composite.clines: no visible global function definition for 'lines'
composite.clines: no visible global function definition for 'dev.off'
fit.c.clines: no visible global function definition for 'coef'
genomic.clines: no visible global function definition for 'coef'
h.func: no visible global function definition for 'optimize'
h.func: no visible global function definition for 'uniroot'
mk.image: no visible global function definition for 'layout'
mk.image: no visible global function definition for 'par'
mk.image: no visible global function definition for 'image'
mk.image: no visible global function definition for 'mtext'
mk.image: no visible global function definition for 'axis'
mk.image: no visible global function definition for 'abline'
mk.image: no visible global function definition for 'box'
mk.image: no visible global function definition for 'lines'
mk.image: no visible global function definition for 'dev.off'
triangle.plot: no visible global function definition for 'lines'
triangle.plot: no visible global function definition for 'dev.off'
Undefined global functions or variables:
  abline axis box coef dev.off hist image layout lines mtext optimize
  par points polygon text title uniroot
Consider adding
  importFrom("grDevices", "dev.off")
  importFrom("graphics", "abline", "axis", "box", "hist", "image",
             "layout", "lines", "mtext", "par", "points", "polygon",
             "text", "title")
  importFrom("stats", "coef", "optimize", "uniroot")
to your NAMESPACE file.