e.single: no visible global function definition for 'pnorm'
elo.seq: no visible global function definition for 'txtProgressBar'
elo.seq: no visible global function definition for 'setTxtProgressBar'
elo.seq: no visible global function definition for 'complete.cases'
elo.seq: no visible global function definition for 'median'
eloplot: no visible global function definition for 'tail'
eloplot: no visible global function definition for 'colors'
eloplot: no visible global function definition for 'layout'
eloplot: no visible global function definition for 'par'
eloplot: no visible global function definition for 'plot'
eloplot: no visible global function definition for 'axis'
eloplot: no visible global function definition for 'mtext'
eloplot: no visible global function definition for 'lines'
eloplot: no visible global function definition for 'legend'
eloplot: no visible global function definition for 'points'
individuals: no visible global function definition for 'sd'
prunk: no visible global function definition for 'combn'
prunk: no visible global function definition for 'na.omit'
randomelo: no visible global function definition for 'txtProgressBar'
randomelo: no visible global function definition for
  'setTxtProgressBar'
randomeloextract: no visible global function definition for 'rnorm'
randomeloextract: no visible global function definition for 'sd'
randomsequence: no visible global function definition for 'combn'
traj.elo: no visible global function definition for 'na.omit'
traj.elo: no visible global function definition for 'lm'
winprob: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  axis colors combn complete.cases layout legend lines lm median mtext
  na.omit par plot pnorm points rnorm sd setTxtProgressBar tail
  txtProgressBar
Consider adding
  importFrom("grDevices", "colors")
  importFrom("graphics", "axis", "layout", "legend", "lines", "mtext",
             "par", "plot", "points")
  importFrom("stats", "complete.cases", "lm", "median", "na.omit",
             "pnorm", "rnorm", "sd")
  importFrom("utils", "combn", "setTxtProgressBar", "tail",
             "txtProgressBar")
to your NAMESPACE file.