cond.glm: no visible global function definition for ‘glm.control’
cond.glm: no visible global function definition for
  ‘model.frame.default’
cond.glm: no visible global function definition for ‘is.empty.model’
cond.glm: no visible global function definition for ‘model.matrix’
cond.glm: no visible global function definition for ‘model.response’
cond.glm: no visible global function definition for ‘contrasts’
cond.glm: no visible global function definition for ‘deviance’
cond.glm: no visible global function definition for ‘as.formula’
cond.glm: no visible global function definition for ‘update’
cond.glm: no visible global function definition for ‘spline’
cond.glm: no visible global function definition for ‘predict’
cond.glm: no visible global function definition for ‘smooth.spline’
cond.glm: no visible global function definition for ‘lm.fit’
cond.glm: no visible global function definition for ‘pnorm’
cond.glm: no visible global function definition for ‘dnorm’
plot.cond: no visible global function definition for ‘menu’
plot.cond: no visible global function definition for ‘qnorm’
plot.cond: no visible global function definition for ‘predict’
plot.cond: no visible global function definition for ‘smooth.spline’
plot.cond: no visible global function definition for ‘par’
plot.cond: no visible global function definition for ‘split.screen’
plot.cond: no visible global function definition for ‘screen’
plot.cond: no visible global function definition for ‘plot’
plot.cond: no visible global function definition for ‘lines’
plot.cond: no visible global function definition for ‘title’
plot.cond: no visible global function definition for ‘locator’
plot.cond: no visible global function definition for ‘legend’
plot.cond: no visible global function definition for ‘qchisq’
plot.cond: no visible global function definition for ‘matplot’
plot.cond: no visible global function definition for ‘abline’
plot.cond: no visible global function definition for ‘close.screen’
plot.cond: no visible global function definition for ‘segments’
plot.cond: no visible global function definition for ‘text’
plot.cond: no visible global function definition for ‘points’
summary.cond: no visible global function definition for ‘qnorm’
summary.cond: no visible global function definition for ‘smooth.spline’
summary.cond: no visible global function definition for ‘predict’
summary.cond: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  abline as.formula close.screen contrasts deviance dnorm glm.control
  is.empty.model legend lines lm.fit locator matplot menu
  model.frame.default model.matrix model.response par plot pnorm points
  predict qchisq qnorm screen segments smooth.spline spline
  split.screen text title update
Consider adding
  importFrom("graphics", "abline", "close.screen", "legend", "lines",
             "locator", "matplot", "par", "plot", "points", "screen",
             "segments", "split.screen", "text", "title")
  importFrom("stats", "as.formula", "contrasts", "deviance", "dnorm",
             "glm.control", "is.empty.model", "lm.fit",
             "model.frame.default", "model.matrix", "model.response",
             "pnorm", "predict", "qchisq", "qnorm", "smooth.spline",
             "spline", "update")
  importFrom("utils", "menu")
to your NAMESPACE file.