est.rho: no visible global function definition for ‘embed’
est.rho: no visible global function definition for ‘na.omit’
gls: no visible global function definition for ‘model.response’
gls: no visible global function definition for ‘model.frame’
panelAR: no visible global function definition for ‘lm’
panelAR: no visible global function definition for ‘model.matrix’
panelAR: no visible global function definition for ‘model.frame’
panelAR: no visible global function definition for ‘model.response’
panelAR: no visible global function definition for ‘residuals’
panelAR: no visible global function definition for ‘reshape’
plot.panelAR: no visible global function definition for ‘image’
plot.panelAR: no visible global function definition for ‘axis’
plot.panelAR: no visible global function definition for ‘text’
plot.panelAR: no visible global function definition for ‘par’
prais.correct: no visible global function definition for ‘na.omit’
prais.correct: no visible global function definition for ‘lm’
prais.transform: no visible global function definition for ‘embed’
prais.transform: no visible global function definition for
  ‘complete.cases’
predict.panelAR: no visible binding for global variable ‘na.pass’
predict.panelAR: no visible global function definition for
  ‘delete.response’
predict.panelAR: no visible global function definition for
  ‘model.matrix’
predict.panelAR: no visible global function definition for
  ‘model.frame’
predict.panelAR: no visible global function definition for
  ‘.checkMFClasses’
predict.panelAR: no visible global function definition for ‘qt’
print.summary.panelAR: no visible global function definition for
  ‘printCoefmat’
summary.panelAR: no visible global function definition for ‘pt’
Undefined global functions or variables:
  .checkMFClasses axis complete.cases delete.response embed image lm
  model.frame model.matrix model.response na.omit na.pass par
  printCoefmat pt qt reshape residuals text
Consider adding
  importFrom("graphics", "axis", "image", "par", "text")
  importFrom("stats", ".checkMFClasses", "complete.cases",
             "delete.response", "embed", "lm", "model.frame",
             "model.matrix", "model.response", "na.omit", "na.pass",
             "printCoefmat", "pt", "qt", "reshape", "residuals")
to your NAMESPACE file.