AR1 : <anonymous>: no visible global function definition for 'rnorm'
autocorr1: no visible global function definition for 'is.mcmc'
autocorr1: no visible global function definition for 'as.mcmc'
autocorr1: no visible global function definition for 'autocorr'
autocov.bridge: no visible global function definition for 'cov'
bridgestat.diag: no visible global function definition for
  'is.mcmc.list'
bridgestat.diag: no visible global function definition for 'as.mcmc'
bridgestat.diag: no visible global function definition for 'nvar'
bridgestat.diag: no visible global function definition for 'varnames'
bridgestat.diag: no visible global function definition for 'niter'
bridgestat.diag: no visible global function definition for 'window'
bridgestat.diag: no visible global function definition for 'start'
bridgestat.diag: no visible global function definition for
  'spectrum0.ar'
brownianbridge: no visible global function definition for 'sd'
loglik_extremum.studentbridge: no visible global function definition
  for 'dt'
loglik_mean.studentbridge: no visible global function definition for
  'dt'
loglikbridge: no visible global function definition for 'var'
ratio_loglik_extremum.studentbridge: no visible global function
  definition for 'dt'
studentbridge: no visible global function definition for 'var'
transient.test: no visible global function definition for 'as.mcmc'
transient.test: no visible global function definition for 'par'
transient.test: no visible global function definition for 'rgb'
transient.test: no visible global function definition for 'density'
transient.test: no visible global function definition for 'polygon'
transient.test: no visible global function definition for 'abline'
var.bridge: no visible global function definition for 'var'
Undefined global functions or variables:
  abline as.mcmc autocorr cov density dt is.mcmc is.mcmc.list niter
  nvar par polygon rgb rnorm sd spectrum0.ar start var varnames window
Consider adding
  importFrom("grDevices", "rgb")
  importFrom("graphics", "abline", "par", "polygon")
  importFrom("stats", "cov", "density", "dt", "rnorm", "sd", "start",
             "var", "window")
to your NAMESPACE file.