US: no visible global function definition for 'plot'
US: no visible global function definition for 'lines'
bplot.obj: no visible global function definition for 'plot'
bplot.obj: no visible global function definition for 'axis'
dbern: no visible global function definition for 'dbinom'
describe: no visible global function definition for 'var'
describe: no visible global function definition for 'quantile'
describe.bplot: no visible global function definition for 'quantile'
describe2: no visible global function definition for 'var'
describe2: no visible global function definition for 'quantile'
draw.bplot: no visible global function definition for 'quantile'
draw.bplot: no visible global function definition for 'lines'
draw.bplot: no visible global function definition for 'points'
draw.bplot.obj: no visible global function definition for 'lines'
draw.bplot.obj: no visible global function definition for 'points'
hplot: no visible global function definition for 'hist'
lplot: no visible global function definition for 'plot'
lplot: no visible global function definition for 'axis'
lplot: no visible global function definition for 'text'
mplot: no visible global function definition for 'interaction.plot'
mplot: no visible global function definition for 'title'
nplot: no visible global function definition for 'qnorm'
nplot: no visible global function definition for 'plot'
nplot: no visible global function definition for 'text'
pbern: no visible global function definition for 'pbinom'
qbern: no visible global function definition for 'qbinom'
rbern: no visible global function definition for 'rbinom'
set.panel: no visible global function definition for 'par'
simulatereg: no visible binding for global variable 'rnorm'
world: no visible global function definition for 'plot'
world: no visible global function definition for 'lines'
xline: no visible global function definition for 'abline'
yline: no visible global function definition for 'abline'
Undefined global functions or variables:
  abline axis dbinom hist interaction.plot lines par pbinom plot points
  qbinom qnorm quantile rbinom rnorm text title var
Consider adding
  importFrom("graphics", "abline", "axis", "hist", "lines", "par",
             "plot", "points", "text", "title")
  importFrom("stats", "dbinom", "interaction.plot", "pbinom", "qbinom",
             "qnorm", "quantile", "rbinom", "rnorm", "var")
to your NAMESPACE file.