MOE: no visible global function definition for ‘dlnorm’
MOE: no visible global function definition for ‘pdf’
MOE: no visible global function definition for ‘par’
MOE: no visible global function definition for ‘matplot’
MOE: no visible global function definition for ‘legend’
MOE: no visible global function definition for ‘plot’
MOE: no visible global function definition for ‘points’
MOE: no visible global function definition for ‘lm’
MOE: no visible global function definition for ‘abline’
MOE: no visible global function definition for ‘dev.off’
MOE: no visible global function definition for ‘write.table’
bsm.objective: no visible global function definition for ‘pnorm’
compute.implied.volatility : f: no visible global function definition
  for ‘pnorm’
compute.implied.volatility: no visible global function definition for
  ‘uniroot’
dew: no visible global function definition for ‘dlnorm’
dgb: no visible global function definition for ‘dbeta’
dmln: no visible global function definition for ‘dlnorm’
dmln.am: no visible global function definition for ‘dlnorm’
dshimko: no visible global function definition for ‘dnorm’
extract.am.density: no visible global function definition for ‘optim’
extract.bsm.density: no visible global function definition for ‘optim’
extract.ew.density: no visible global function definition for ‘optim’
extract.gb.density: no visible global function definition for ‘optim’
extract.mln.density: no visible global function definition for ‘optim’
extract.rates: no visible global function definition for ‘lm’
fit.implied.volatility.curve: no visible global function definition for
  ‘lm’
pgb: no visible global function definition for ‘pbeta’
price.am.option: no visible global function definition for ‘pnorm’
price.bsm.option: no visible global function definition for ‘pnorm’
price.ew.option: no visible global function definition for ‘dlnorm’
price.mln.option: no visible global function definition for ‘pnorm’
price.shimko.option: no visible global function definition for
  ‘integrate’
Undefined global functions or variables:
  abline dbeta dev.off dlnorm dnorm integrate legend lm matplot optim
  par pbeta pdf plot pnorm points uniroot write.table
Consider adding
  importFrom("grDevices", "dev.off", "pdf")
  importFrom("graphics", "abline", "legend", "matplot", "par", "plot",
             "points")
  importFrom("stats", "dbeta", "dlnorm", "dnorm", "integrate", "lm",
             "optim", "pbeta", "pnorm", "uniroot")
  importFrom("utils", "write.table")
to your NAMESPACE file.