BiplotDensity: no visible global function definition for ‘rainbow’
BiplotDensity: no visible global function definition for ‘heat.colors’
BiplotDensity: no visible global function definition for
  ‘terrain.colors’
BiplotDensity: no visible global function definition for ‘topo.colors’
BiplotDensity: no visible global function definition for ‘cm.colors’
BiplotDensity: no visible global function definition for ‘par’
BiplotDensity: no visible global function definition for ‘image’
BiplotDensity: no visible global function definition for ‘plot’
BiplotDensity: no visible global function definition for ‘points’
BiplotDensity: no visible global function definition for ‘box’
BiplotDensity: no visible global function definition for ‘contour’
BiplotDensity: no visible global function definition for ‘text’
CalculateFittingIndicatorsMirt: no visible global function definition
  for ‘pchisq’
CheckDataSet: no visible global function definition for ‘na.omit’
EstimationRowsMIRT: no visible global function definition for ‘coef’
OrdinalLogisticBiplot: no visible global function definition for
  ‘model.frame’
PlotClusters: no visible global function definition for ‘palette’
PlotClusters: no visible global function definition for ‘rainbow’
PlotClusters: no visible global function definition for ‘quantile’
PlotClusters: no visible global function definition for ‘chull’
PlotClusters: no visible global function definition for ‘lines’
PlotClusters: no visible global function definition for ‘points’
PlotClusters: no visible global function definition for ‘text’
plot.ordBipVariable: no visible global function definition for ‘abline’
plot.ordBipVariable: no visible global function definition for ‘points’
plot.ordBipVariable: no visible global function definition for ‘text’
plot.ordinal.logistic.biplot: no visible global function definition for
  ‘colors’
plot.ordinal.logistic.biplot: no visible global function definition for
  ‘points’
plot.ordinal.logistic.biplot: no visible global function definition for
  ‘dev.new’
plot.ordinal.logistic.biplot: no visible global function definition for
  ‘plot’
plot.ordinal.logistic.biplot: no visible global function definition for
  ‘text’
plot.ordinal.logistic.biplot: no visible global function definition for
  ‘legend’
plotCurvesCategoriesVariable: no visible global function definition for
  ‘dev.new’
plotCurvesCategoriesVariable: no visible global function definition for
  ‘plot’
plotCurvesCategoriesVariable: no visible global function definition for
  ‘points’
plotOrdinalFittedVariable: no visible global function definition for
  ‘dev.new’
plotOrdinalFittedVariable: no visible global function definition for
  ‘plot’
plotOrdinalVariable: no visible global function definition for
  ‘dev.new’
plotOrdinalVariable: no visible global function definition for ‘plot’
pordlogist: no visible global function definition for ‘pchisq’
summary.pordlogist: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline box chull cm.colors coef colors contour dev.new heat.colors
  image legend lines model.frame na.omit palette par pchisq plot pnorm
  points quantile rainbow terrain.colors text topo.colors
Consider adding
  importFrom("grDevices", "chull", "cm.colors", "colors", "dev.new",
             "heat.colors", "palette", "rainbow", "terrain.colors",
             "topo.colors")
  importFrom("graphics", "abline", "box", "contour", "image", "legend",
             "lines", "par", "plot", "points", "text")
  importFrom("stats", "coef", "model.frame", "na.omit", "pchisq",
             "pnorm", "quantile")
to your NAMESPACE file.