Tkp: no visible global function definition for ‘is.spam’
addObservations: no visible global function definition for ‘bbox’
addObservations: no visible global function definition for ‘as.ppp’
addObservations: no visible global function definition for ‘nncross’
addObservations: no visible global function definition for ‘plot’
addObservations: no visible global function definition for ‘points’
addQuantVar: no visible global function definition for ‘bbox’
addQuantVar: no visible global function definition for ‘as.ppp’
addQuantVar: no visible global function definition for ‘nncross’
addQuantVar: no visible global function definition for ‘plot’
addQuantVar: no visible global function definition for ‘points’
areaRegion: no visible global function definition for ‘areapl’
crossvalDensity: no visible global function definition for ‘plot’
crossvalNparReg: no visible global function definition for ‘plot’
editLattice: no visible global function definition for ‘card’
editLattice: no visible global function definition for ‘plot.new’
editLattice: no visible global function definition for ‘plot.window’
editLattice: no visible global function definition for ‘lines’
editLattice: no visible global function definition for ‘segments’
editLattice: no visible global function definition for ‘points’
editLattice: no visible global function definition for ‘par’
editLattice: no visible global function definition for ‘identify’
formLattice: no visible global function definition for ‘dnearneigh’
homerange: no visible global function definition for ‘plot’
homerange: no visible global function definition for ‘points’
homerange: no visible global function definition for ‘lines’
makeTmatrix: no visible global function definition for ‘as.spam.listw’
makeTmatrix: no visible global function definition for ‘nb2listw’
makeTmatrix: no visible global function definition for ‘diag.spam’
makeTmatrix: no visible global function definition for ‘nb2mat’
nodeFilling: no visible global function definition for ‘flush.console’
nodeFilling: no visible global function definition for ‘inout’
nodeFilling: no visible global function definition for ‘as.points’
plot.NparRegOut: no visible global function definition for ‘contour’
plot.NparRegOut: no visible global function definition for ‘lines’
plot.densityOut: no visible global function definition for ‘contour’
plot.densityOut: no visible global function definition for ‘lines’
plot.densityOut: no visible global function definition for ‘points’
plot.formLatticeOutput: no visible global function definition for
  ‘plot’
plot.formLatticeOutput: no visible global function definition for
  ‘lines’
plot.formLatticeOutput: no visible global function definition for
  ‘card’
plot.formLatticeOutput: no visible global function definition for
  ‘points’
plot.nodeFillingOutput: no visible global function definition for
  ‘plot’
plot.nodeFillingOutput: no visible global function definition for
  ‘points’
plot.nodeFillingOutput: no visible global function definition for
  ‘lines’
predict.NparRegOut: no visible global function definition for ‘bbox’
predict.NparRegOut: no visible global function definition for ‘as.ppp’
predict.NparRegOut: no visible global function definition for ‘nncross’
removeHole: no visible global function definition for ‘inout’
Undefined global functions or variables:
  areapl as.points as.ppp as.spam.listw bbox card contour diag.spam
  dnearneigh flush.console identify inout is.spam lines nb2listw nb2mat
  nncross par plot plot.new plot.window points segments
Consider adding
  importFrom("graphics", "contour", "identify", "lines", "par", "plot",
             "plot.new", "plot.window", "points", "segments")
  importFrom("utils", "flush.console")
to your NAMESPACE file.