bpstrip: no visible global function definition for ‘ecdf’
bpstrip: no visible binding for global variable ‘panel.polygon’
bpstrip: no visible binding for global variable ‘panel.segments’
bpstrip: no visible global function definition for
  ‘current.panel.limits’
bpstrip: no visible global function definition for ‘trellis.par.get’
bpstrip: no visible binding for global variable ‘polygon’
bpstrip: no visible binding for global variable ‘segments’
bpstrip: no visible global function definition for ‘par’
cistrip: no visible global function definition for ‘par’
cistrip: no visible binding for global variable ‘panel.points’
cistrip: no visible binding for global variable ‘panel.segments’
cistrip: no visible binding for global variable ‘points’
cistrip: no visible binding for global variable ‘segments’
densregion.default: no visible global function definition for ‘par’
densregion.default: no visible global function definition for
  ‘quantile’
densregion.default: no visible global function definition for ‘col2rgb’
densregion.default: no visible global function definition for ‘rgb’
densregion.default: no visible global function definition for
  ‘.filled.contour’
densregion.normal: no visible global function definition for ‘qnorm’
densregion.normal: no visible global function definition for ‘ppoints’
densregion.normal: no visible global function definition for ‘dnorm’
densregion.survfit: no visible global function definition for ‘qnorm’
densregion.survfit: no visible global function definition for ‘ppoints’
densregion.survfit: no visible global function definition for ‘dnorm’
denstrip: no visible global function definition for ‘density’
denstrip: no visible binding for global variable ‘panel.rect’
denstrip: no visible binding for global variable ‘panel.segments’
denstrip: no visible global function definition for
  ‘current.panel.limits’
denstrip: no visible global function definition for ‘trellis.par.get’
denstrip: no visible binding for global variable ‘rect’
denstrip: no visible binding for global variable ‘segments’
denstrip: no visible global function definition for ‘par’
denstrip: no visible global function definition for ‘col2rgb’
denstrip: no visible global function definition for ‘rgb’
denstrip.legend: no visible binding for global variable ‘panel.polygon’
denstrip.legend: no visible binding for global variable
  ‘panel.segments’
denstrip.legend: no visible binding for global variable ‘panel.text’
denstrip.legend: no visible global function definition for
  ‘current.panel.limits’
denstrip.legend: no visible global function definition for
  ‘trellis.last.object’
denstrip.legend: no visible global function definition for
  ‘trellis.par.get’
denstrip.legend: no visible binding for global variable ‘polygon’
denstrip.legend: no visible binding for global variable ‘segments’
denstrip.legend: no visible binding for global variable ‘text’
denstrip.legend: no visible global function definition for ‘par’
denstrip.normal: no visible global function definition for ‘qlnorm’
denstrip.normal: no visible global function definition for ‘ppoints’
denstrip.normal: no visible global function definition for ‘qnorm’
denstrip.normal: no visible global function definition for ‘dlnorm’
denstrip.normal: no visible global function definition for ‘dnorm’
sectioned.density: no visible binding for global variable ‘panel.rect’
sectioned.density: no visible global function definition for
  ‘current.panel.limits’
sectioned.density: no visible global function definition for
  ‘trellis.par.get’
sectioned.density: no visible binding for global variable ‘rect’
sectioned.density: no visible global function definition for ‘par’
sectioned.density: no visible global function definition for
  ‘nclass.Sturges’
sectioned.density: no visible global function definition for ‘density’
sectioned.density: no visible global function definition for ‘col2rgb’
sectioned.density: no visible global function definition for ‘rgb’
vwstrip: no visible global function definition for ‘density’
vwstrip: no visible binding for global variable ‘panel.polygon’
vwstrip: no visible binding for global variable ‘panel.segments’
vwstrip: no visible global function definition for
  ‘current.panel.limits’
vwstrip: no visible global function definition for ‘trellis.par.get’
vwstrip: no visible binding for global variable ‘polygon’
vwstrip: no visible binding for global variable ‘segments’
vwstrip: no visible global function definition for ‘par’
vwstrip.normal: no visible global function definition for ‘qlnorm’
vwstrip.normal: no visible global function definition for ‘ppoints’
vwstrip.normal: no visible global function definition for ‘qnorm’
vwstrip.normal: no visible global function definition for ‘dlnorm’
vwstrip.normal: no visible global function definition for ‘dnorm’
Undefined global functions or variables:
  .filled.contour col2rgb current.panel.limits density dlnorm dnorm
  ecdf nclass.Sturges panel.points panel.polygon panel.rect
  panel.segments panel.text par points polygon ppoints qlnorm qnorm
  quantile rect rgb segments text trellis.last.object trellis.par.get
Consider adding
  importFrom("grDevices", "col2rgb", "nclass.Sturges", "rgb")
  importFrom("graphics", ".filled.contour", "par", "points", "polygon",
             "rect", "segments", "text")
  importFrom("stats", "density", "dlnorm", "dnorm", "ecdf", "ppoints",
             "qlnorm", "qnorm", "quantile")
to your NAMESPACE file.