ckappa: no visible global function definition for 'na.omit'
cronbach: no visible global function definition for 'na.omit'
cronbach: no visible binding for global variable 'var'
cronbach: no visible global function definition for 'var'
fpca: no visible global function definition for 'model.extract'
fpca: no visible global function definition for 'na.omit'
fpca: no visible global function definition for 'var'
fpca: no visible global function definition for 'cor'
fpca: no visible global function definition for 'par'
fpca: no visible global function definition for 'lines'
fpca: no visible global function definition for 'symbols'
fpca: no visible global function definition for 'text'
icc: no visible global function definition for 'na.omit'
icc: no visible global function definition for 'anova'
icc: no visible global function definition for 'lm'
mdspca: no visible global function definition for 'na.omit'
mdspca: no visible global function definition for 'sd'
mdspca: no visible global function definition for 'cor'
mdspca: no visible global function definition for 'par'
mdspca: no visible global function definition for 'lines'
mdspca: no visible global function definition for 'symbols'
mdspca: no visible global function definition for 'text'
mtmm: no visible global function definition for 'par'
mtmm: no visible global function definition for 'na.omit'
mtmm: no visible global function definition for 'cor'
mtmm: no visible global function definition for 'boxplot'
mtmm: no visible global function definition for 'stripchart'
mtmm: no visible global function definition for 'points'
mtmm: no visible global function definition for 'median'
mtmm: no visible global function definition for 'reshape'
mtmm: no visible global function definition for 'x11'
mtmm: no visible global function definition for 'abline'
scree.plot: no visible global function definition for 'na.omit'
scree.plot: no visible global function definition for 'cor'
scree.plot: no visible global function definition for 'cov'
scree.plot: no visible global function definition for 'lines'
scree.plot: no visible global function definition for 'rnorm'
scree.plot: no visible global function definition for 'points'
sphpca: no visible global function definition for 'na.omit'
sphpca: no visible global function definition for 'cor'
sphpca: no visible global function definition for 'optim'
sphpca: no visible global function definition for 'lm'
sphpca: no visible global function definition for 'par'
sphpca: no visible global function definition for 'lines'
sphpca: no visible global function definition for 'symbols'
sphpca: no visible global function definition for 'text'
wkappa: no visible global function definition for 'na.omit'
Undefined global functions or variables:
  abline anova boxplot cor cov lines lm median model.extract na.omit
  optim par points reshape rnorm sd stripchart symbols text var x11
Consider adding
  importFrom("grDevices", "x11")
  importFrom("graphics", "abline", "boxplot", "lines", "par", "points",
             "stripchart", "symbols", "text")
  importFrom("stats", "anova", "cor", "cov", "lm", "median",
             "model.extract", "na.omit", "optim", "reshape", "rnorm",
             "sd", "var")
to your NAMESPACE file.