Gplot.graphics: no visible global function definition for ‘par’
Gplot.network: no visible global function definition for ‘plot’
Gplot.pie.nodes: no visible global function definition for ‘quantile’
Gplot.vertex: no visible global function definition for ‘polygon’
Gplot.vertex.label: no visible global function definition for ‘par’
Gplot.vertex.label: no visible global function definition for
  ‘strwidth’
Gplot.vertex.label: no visible global function definition for
  ‘strheight’
Gplot.vertex.label: no visible global function definition for ‘rect’
Gplot.vertex.label: no visible global function definition for ‘text’
color.lightening: no visible global function definition for ‘rgb’
draw.arc: no visible global function definition for ‘polygon’
draw.cercle: no visible global function definition for ‘polygon’
draw.edges: no visible global function definition for ‘polygon’
draw.loops: no visible global function definition for ‘polygon’
draw.rot.poly: no visible global function definition for ‘polygon’
draw.rot.poly: no visible global function definition for ‘points’
draw.sector: no visible global function definition for ‘polygon’
graph.affiliation: no visible global function definition for
  ‘rmultinom’
graph.affiliation: no visible global function definition for ‘rbinom’
light.palette: no visible global function definition for ‘approx’
light.palette: no visible global function definition for ‘rgb’
mixture: no visible global function definition for ‘dpois’
plot.mixer: no visible global function definition for ‘par’
plotam: no visible global function definition for ‘plot’
plotam: no visible global function definition for ‘rect’
plotam: no visible global function definition for ‘abline’
ploticl: no visible global function definition for ‘plot’
ploticl: no visible global function definition for ‘lines’
ploticl: no visible global function definition for ‘abline’
plotmixture: no visible global function definition for ‘hist’
plotmixture: no visible global function definition for ‘plot’
plotmixture: no visible global function definition for ‘lines’
plotmixture: no visible global function definition for ‘points’
plotparam: no visible global function definition for ‘plot’
plotparam: no visible global function definition for ‘points’
plotparam: no visible global function definition for ‘text’
spectralkmeans: no visible global function definition for ‘kmeans’
Undefined global functions or variables:
  abline approx dpois hist kmeans lines par plot points polygon
  quantile rbinom rect rgb rmultinom strheight strwidth text
Consider adding
  importFrom("grDevices", "rgb")
  importFrom("graphics", "abline", "hist", "lines", "par", "plot",
             "points", "polygon", "rect", "strheight", "strwidth",
             "text")
  importFrom("stats", "approx", "dpois", "kmeans", "quantile", "rbinom",
             "rmultinom")
to your NAMESPACE file.