CalcCorners: no visible global function definition for 'abline'
ConvDiffCoef: no visible global function definition for 'pascal'
ConvolveTrace: no visible global function definition for 'filter'
DeconTrace: no visible global function definition for 'as.Zpg'
DeconTrace: no visible global function definition for 'butter'
DeconTrace: no visible global function definition for 'filter'
GetDPZ: no visible global function definition for 'data'
MakeDPZ: no visible global function definition for 'bilinear'
MakeDPZ: no visible global function definition for 'fft'
MakeDPZ: no visible global function definition for 'lines'
MakeDPZ: no visible global function definition for 'legend'
MatchCoefDPZ : CalcMisfit: no visible global function definition for
  'fft'
MatchCoefDPZ : CalcMisfit: no visible global function definition for
  'filter'
MatchCoefDPZ : generate: no visible global function definition for
  'runif'
MatchCoefDPZ : generate: no visible global function definition for
  'rnorm'
MatchCoefDPZ: no visible global function definition for 'fft'
MatchCoefDPZ: no visible global function definition for 'filter'
MatchCoefDPZ: no visible global function definition for 'Zpg'
MatchCoefDPZ: no visible global function definition for 'plot'
MatchCoefDPZ: no visible global function definition for 'lines'
MatchCoefDPZ: no visible global function definition for 'abline'
Metropolis: no visible global function definition for 'runif'
PZ2Coef: no visible global function definition for 'Poly'
PZ2Resp: no visible global function definition for 'plot'
PlotResp: no visible global function definition for 'fft'
PlotResp: no visible global function definition for 'filter'
PlotResp: no visible global function definition for 'plot'
PlotResp: no visible global function definition for 'lines'
Undefined global functions or variables:
  Poly Zpg abline as.Zpg bilinear butter data fft filter legend lines
  pascal plot rnorm runif
Consider adding
  importFrom("graphics", "abline", "legend", "lines", "plot")
  importFrom("stats", "fft", "filter", "rnorm", "runif")
  importFrom("utils", "data")
to your NAMESPACE file.