get.est.ATT: no visible global function definition for 'tail'
get.est.MT: no visible global function definition for 'tail'
get.est.simple: no visible global function definition for 'tail'
newton.r: no visible global function definition for 'tail'
plot.ATE: no visible global function definition for 'par'
plot.ATE: no visible global function definition for 'axis'
plot.ATE: no visible global function definition for 'abline'
plot.ATE: no visible global function definition for 'lines'
plot.ATE: no visible global function definition for 'legend'
plot.ATE: no visible global function definition for 'points'
print.summary.ATE: no visible global function definition for
  'printCoefmat'
summary.ATE: no visible global function definition for 'qnorm'
summary.ATE: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for 'tail'
get.est.MT: no visible global function definition for 'tail'
get.est.simple: no visible global function definition for 'tail'
newton.r: no visible global function definition for 'tail'
plot.ATE: no visible global function definition for 'par'
plot.ATE: no visible global function definition for 'axis'
plot.ATE: no visible global function definition for 'abline'
plot.ATE: no visible global function definition for 'lines'
plot.ATE: no visible global function definition for 'legend'
plot.ATE: no visible global function definition for 'points'
print.summary.ATE: no visible global function definition for
  'printCoefmat'
summary.ATE: no visible global function definition for 'qnorm'
summary.ATE: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for 'tail'
get.est.MT: no visible global function definition for 'tail'
get.est.simple: no visible global function definition for 'tail'
newton.r: no visible global function definition for 'tail'
plot.ATE: no visible global function definition for 'par'
plot.ATE: no visible global function definition for 'axis'
plot.ATE: no visible global function definition for 'abline'
plot.ATE: no visible global function definition for 'lines'
plot.ATE: no visible global function definition for 'legend'
plot.ATE: no visible global function definition for 'points'
print.summary.ATE: no visible global function definition for
  'printCoefmat'
summary.ATE: no visible global function definition for 'qnorm'
summary.ATE: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for ‘tail’
get.est.MT: no visible global function definition for ‘tail’
get.est.simple: no visible global function definition for ‘tail’
newton.r: no visible global function definition for ‘tail’
plot.ATE: no visible global function definition for ‘par’
plot.ATE: no visible global function definition for ‘axis’
plot.ATE: no visible global function definition for ‘abline’
plot.ATE: no visible global function definition for ‘lines’
plot.ATE: no visible global function definition for ‘legend’
plot.ATE: no visible global function definition for ‘points’
print.summary.ATE: no visible global function definition for
  ‘printCoefmat’
summary.ATE: no visible global function definition for ‘qnorm’
summary.ATE: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.
get.est.ATT: no visible global function definition for 'tail'
get.est.MT: no visible global function definition for 'tail'
get.est.simple: no visible global function definition for 'tail'
newton.r: no visible global function definition for 'tail'
plot.ATE: no visible global function definition for 'par'
plot.ATE: no visible global function definition for 'axis'
plot.ATE: no visible global function definition for 'abline'
plot.ATE: no visible global function definition for 'lines'
plot.ATE: no visible global function definition for 'legend'
plot.ATE: no visible global function definition for 'points'
print.summary.ATE: no visible global function definition for
  'printCoefmat'
summary.ATE: no visible global function definition for 'qnorm'
summary.ATE: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  abline axis legend lines par pnorm points printCoefmat qnorm tail
Consider adding
  importFrom("graphics", "abline", "axis", "legend", "lines", "par",
             "points")
  importFrom("stats", "pnorm", "printCoefmat", "qnorm")
  importFrom("utils", "tail")
to your NAMESPACE file.