alpha.fun: no visible global function definition for 'qchisq'
alpha.fun: no visible global function definition for 'pchisq'
com.ci: no visible global function definition for 'uniroot'
com.ci: no visible global function definition for 'str'
elev.com: no visible global function definition for 'pchisq'
elev.com: no visible global function definition for 'var'
elev.com: no visible global function definition for 'qchisq'
elev.com: no visible global function definition for 'qt'
elev.test: no visible global function definition for 'qf'
elev.test: no visible global function definition for 'pchisq'
elev.test: no visible global function definition for 'var'
elev.test: no visible global function definition for 'pt'
fitted.sma: no visible global function definition for 'model.frame'
fitted.sma: no visible global function definition for 'coef'
fitted.sma: no visible global function definition for 'join'
gamma.fun: no visible global function definition for 'qchisq'
gamma.fun: no visible global function definition for 'pchisq'
huber.M: no visible global function definition for 'pchisq'
huber.M: no visible global function definition for 'qchisq'
huber.M: no visible global function definition for 'cov'
line.cis: no visible global function definition for 'na.omit'
line.cis: no visible global function definition for 'qf'
line.cis: no visible global function definition for 'pchisq'
line.cis: no visible global function definition for 'var'
logLik.sma: no visible global function definition for 'cov'
meas.est: no visible global function definition for 'var'
multcompmatrix: no visible global function definition for 'combn'
nicePlot: no visible global function definition for 'par'
nicePlot: no visible global function definition for 'plot'
nicePlot: no visible global function definition for 'box'
nicePlot: no visible global function definition for 'mtext'
plot.sma: no visible global function definition for 'par'
plot.sma : make.transparent: no visible global function definition for
  'col2rgb'
plot.sma : make.transparent: no visible global function definition for
  'rgb'
plot.sma: no visible global function definition for 'plot'
plot.sma: no visible global function definition for 'points'
plot.sma: no visible global function definition for 'curve'
plot.sma: no visible global function definition for 'qqnorm'
plot.sma: no visible global function definition for 'qqline'
residuals.sma: no visible global function definition for 'fitted'
robust.factor: no visible global function definition for 'pchisq'
shift.com: no visible global function definition for 'pchisq'
shift.com: no visible global function definition for 'var'
slope.com: no visible global function definition for 'pchisq'
slope.com: no visible global function definition for 'cov'
slope.com: no visible global function definition for 'qchisq'
slope.test: no visible global function definition for 'qf'
slope.test: no visible global function definition for 'pchisq'
slope.test: no visible global function definition for 'cov'
slope.test: no visible global function definition for 'pf'
sma: no visible global function definition for 'cor'
sma: no visible global function definition for 'cor.test'
sma: no visible global function definition for 'pf'
sma: no visible global function definition for 'combn'
Undefined global functions or variables:
  box coef col2rgb combn cor cor.test cov curve fitted join model.frame
  mtext na.omit par pchisq pf plot points pt qchisq qf qqline qqnorm qt
  rgb str uniroot var
Consider adding
  importFrom("grDevices", "col2rgb", "rgb")
  importFrom("graphics", "box", "curve", "mtext", "par", "plot",
             "points")
  importFrom("stats", "coef", "cor", "cor.test", "cov", "fitted",
             "model.frame", "na.omit", "pchisq", "pf", "pt", "qchisq",
             "qf", "qqline", "qqnorm", "qt", "uniroot", "var")
  importFrom("utils", "combn", "str")
to your NAMESPACE file.