coef.heckit5rob: no visible global function definition for ‘coef’
coef.heckitrob: no visible global function definition for ‘coef’
dLambdadSM: no visible global function definition for ‘pnorm’
dLambdadSM: no visible global function definition for ‘dnorm’
dLambdadSM5: no visible global function definition for ‘pnorm’
dLambdadSM5: no visible global function definition for ‘dnorm’
fitted.heckit5rob: no visible global function definition for ‘fitted’
fitted.heckitrob: no visible global function definition for ‘fitted’
heck2steprobVcov: no visible global function definition for ‘vcov’
heck5twosteprobVcov: no visible global function definition for ‘vcov’
heckit5rob: no visible binding for global variable ‘na.pass’
heckit5rob: no visible global function definition for ‘model.matrix’
heckit5rob: no visible global function definition for ‘model.response’
heckit5rob: no visible global function definition for ‘binomial’
heckit5rob: no visible global function definition for ‘hat’
heckitrob: no visible binding for global variable ‘na.pass’
heckitrob: no visible global function definition for ‘model.matrix’
heckitrob: no visible global function definition for ‘model.response’
heckitrob: no visible global function definition for ‘binomial’
heckitrob: no visible global function definition for ‘hat’
residuals.heckit5rob: no visible global function definition for ‘resid’
residuals.heckitrob: no visible global function definition for ‘resid’
summary.heckit5rob: no visible global function definition for ‘vcov’
summary.heckit5rob: no visible global function definition for ‘coef’
summary.heckit5rob: no visible global function definition for ‘pnorm’
summary.heckit5rob: no visible global function definition for ‘symnum’
summary.heckitrob: no visible global function definition for ‘vcov’
summary.heckitrob: no visible global function definition for ‘coef’
summary.heckitrob: no visible global function definition for ‘pnorm’
summary.heckitrob: no visible global function definition for ‘symnum’
x2weight.covMcd: no visible global function definition for ‘qchisq’
x2weight.covMcd: no visible global function definition for
  ‘mahalanobis’
x2weight.robCov: no visible global function definition for ‘qchisq’
x2weight.robCov: no visible global function definition for
  ‘mahalanobis’
Undefined global functions or variables:
  binomial coef dnorm fitted hat mahalanobis model.matrix
  model.response na.pass pnorm qchisq resid symnum vcov
Consider adding
  importFrom("stats", "binomial", "coef", "dnorm", "fitted", "hat",
             "mahalanobis", "model.matrix", "model.response", "na.pass",
             "pnorm", "qchisq", "resid", "symnum", "vcov")
to your NAMESPACE file.