cvimpute.by.mean: no visible global function definition for ‘embed’
emd: no visible global function definition for ‘sd’
emd: no visible global function definition for ‘is.ts’
emd: no visible global function definition for ‘plot’
emd: no visible global function definition for ‘abline’
emd: no visible global function definition for ‘locator’
emd.pred: no visible global function definition for ‘qt’
emd.pred: no visible global function definition for ‘par’
emd.pred: no visible global function definition for ‘plot’
emd.pred: no visible global function definition for ‘lines’
emd2d: no visible global function definition for ‘sd’
emd2d: no visible global function definition for ‘par’
emd2d: no visible global function definition for ‘image’
emd2d: no visible global function definition for ‘gray’
emd2d: no visible global function definition for ‘box’
emd2d: no visible global function definition for ‘locator’
emddenoise: no visible global function definition for ‘sd’
emddenoise: no visible global function definition for ‘is.ts’
emddenoise: no visible global function definition for ‘ts’
extractimf: no visible global function definition for ‘sd’
extractimf: no visible global function definition for ‘is.ts’
extractimf: no visible global function definition for ‘splinefun’
extractimf: no visible global function definition for ‘predict’
extractimf: no visible global function definition for ‘loess’
extractimf: no visible global function definition for ‘loess.control’
extractimf: no visible global function definition for ‘plot’
extractimf: no visible global function definition for ‘points’
extractimf: no visible global function definition for ‘lines’
extractimf: no visible global function definition for ‘locator’
extractimf2d: no visible global function definition for ‘sd’
extractimf2d: no visible global function definition for ‘par’
extractimf2d: no visible global function definition for ‘predict’
extractimf2d: no visible global function definition for ‘loess’
extractimf2d: no visible global function definition for ‘loess.control’
extractimf2d: no visible global function definition for ‘image’
extractimf2d: no visible global function definition for ‘gray’
extractimf2d: no visible global function definition for ‘box’
extractimf2d: no visible global function definition for ‘locator’
hilbert: no visible global function definition for ‘is.ts’
hilbert: no visible global function definition for ‘fft’
image.plot.ts: no visible global function definition for ‘par’
image.plot.ts: no visible global function definition for ‘image’
image.plot.ts: no visible global function definition for ‘axis.POSIXct’
image.plot.ts: no visible global function definition for ‘axis’
image.plot.ts: no visible global function definition for ‘box’
imageEMD: no visible global function definition for ‘par’
imageEMD: no visible global function definition for ‘image’
imageEMD: no visible global function definition for ‘gray’
semd: no visible global function definition for ‘sd’
semd: no visible global function definition for ‘is.ts’
spectrogram: no visible global function definition for ‘gray’
spectrogram: no visible global function definition for ‘box’
spectrogram: no visible global function definition for ‘par’
Undefined global functions or variables:
  abline axis axis.POSIXct box embed fft gray image is.ts lines locator
  loess loess.control par plot points predict qt sd splinefun ts
Consider adding
  importFrom("grDevices", "gray")
  importFrom("graphics", "abline", "axis", "axis.POSIXct", "box",
             "image", "lines", "locator", "par", "plot", "points")
  importFrom("stats", "embed", "fft", "is.ts", "loess", "loess.control",
             "predict", "qt", "sd", "splinefun", "ts")
to your NAMESPACE file.