Invalid MIT-MAGIC-COOKIE-1 keybond_yields: no visible global function definition for ‘uniroot’
estim_cs.couponbonds : <anonymous>: no visible global function
  definition for ‘lm’
estim_cs.couponbonds: no visible binding for global variable ‘coef’
estim_cs.couponbonds: no visible binding for global variable ‘vcov’
estim_cs.couponbonds : <anonymous>: no visible global function
  definition for ‘qt’
estimateyieldcurve: no visible global function definition for
  ‘constrOptim’
estimatezcyieldcurve: no visible global function definition for
  ‘constrOptim’
fcontrib.dyntermstrc_param: no visible global function definition for
  ‘par’
fcontrib.dyntermstrc_param: no visible global function definition for
  ‘plot’
fcontrib.dyntermstrc_param: no visible global function definition for
  ‘lines’
fcontrib.dyntermstrc_param: no visible global function definition for
  ‘abline’
fcontrib.dyntermstrc_param: no visible global function definition for
  ‘legend’
fcontrib.dyntermstrc_param: no visible global function definition for
  ‘box’
findstartparambonds: no visible global function definition for
  ‘constrOptim’
findstartparamyields: no visible global function definition for
  ‘constrOptim’
plot.dyntermstrc_param: no visible global function definition for ‘par’
plot.dyntermstrc_param: no visible global function definition for
  ‘plot’
plot.dyntermstrc_param: no visible global function definition for
  ‘grid’
plot.dyntermstrc_param: no visible global function definition for ‘acf’
plot.dyntermstrc_param: no visible global function definition for
  ‘pacf’
plot.error: no visible global function definition for ‘par’
plot.error: no visible global function definition for ‘plot’
plot.error: no visible global function definition for ‘axis’
plot.error: no visible global function definition for ‘mtext’
plot.error: no visible global function definition for ‘lines’
plot.error: no visible global function definition for ‘title’
plot.ir_curve: no visible global function definition for ‘plot’
plot.s_curves: no visible global function definition for ‘plot’
plot.s_curves: no visible global function definition for ‘lines’
plot.s_curves: no visible global function definition for ‘title’
plot.s_curves: no visible global function definition for ‘legend’
plot.spot_curves: no visible global function definition for ‘plot’
plot.spot_curves: no visible global function definition for ‘lines’
plot.spot_curves: no visible global function definition for ‘title’
plot.spot_curves: no visible global function definition for ‘legend’
plot.spot_curves: no visible global function definition for ‘par’
plot.spsearch: no visible global function definition for ‘image’
plot.spsearch: no visible global function definition for ‘contour’
plot.spsearch: no visible global function definition for ‘points’
plot.spsearch: no visible global function definition for ‘par’
plot.spsearch: no visible global function definition for ‘persp’
plot.spsearch: no visible global function definition for ‘plot’
plot.termstrc_cs: no visible global function definition for ‘plot’
plot.termstrc_cs: no visible global function definition for ‘par’
plot.termstrc_cs: no visible global function definition for ‘title’
plot.termstrc_cs: no visible global function definition for ‘points’
plot.termstrc_cs: no visible global function definition for ‘lines’
plot.termstrc_cs: no visible global function definition for ‘abline’
plot.termstrc_cs: no visible global function definition for ‘legend’
plot.termstrc_nss: no visible global function definition for ‘plot’
plot.termstrc_nss: no visible global function definition for ‘par’
plot.termstrc_nss: no visible global function definition for ‘title’
plot.termstrc_nss: no visible global function definition for ‘points’
plot.termstrc_nss: no visible global function definition for ‘legend’
summary.dyntermstrc_param: no visible global function definition for
  ‘cor’
Undefined global functions or variables:
  abline acf axis box coef constrOptim contour cor grid image legend
  lines lm mtext pacf par persp plot points qt title uniroot vcov
Consider adding
  importFrom("graphics", "abline", "axis", "box", "contour", "grid",
             "image", "legend", "lines", "mtext", "par", "persp", "plot",
             "points", "title")
  importFrom("stats", "acf", "coef", "constrOptim", "cor", "lm", "pacf",
             "qt", "uniroot", "vcov")
to your NAMESPACE file.