BB_Prior_prob_phi: no visible global function definition for 'dexp'
BB_Update_mu: no visible global function definition for 'rnorm'
BB_Update_mu: no visible global function definition for 'runif'
BB_Update_phi: no visible global function definition for 'rnorm'
BB_Update_phi: no visible global function definition for 'runif'
BB_Update_thetas : <anonymous>: no visible global function definition
  for 'rnorm'
BB_Update_thetas: no visible global function definition for 'runif'
Initialize.params: no visible global function definition for 'sd'
MCMC: no visible global function definition for 'runif'
MCMC_BB: no visible global function definition for 'runif'
MCMC_BB: no visible global function definition for 'rexp'
Prior_prob_alpha0: no visible global function definition for 'dgamma'
Prior_prob_alpha2: no visible global function definition for 'dunif'
Prior_prob_alphaD: no visible global function definition for 'dexp'
Prior_prob_alphaE: no visible global function definition for 'dexp'
Prior_prob_beta: no visible global function definition for 'dgamma'
Prior_prob_mu: no visible global function definition for 'dnorm'
Update_a0: no visible global function definition for 'rgamma'
Update_a2: no visible global function definition for 'rnorm'
Update_a2: no visible global function definition for 'runif'
Update_aD: no visible global function definition for 'rnorm'
Update_aD: no visible global function definition for 'runif'
Update_aE: no visible global function definition for 'rnorm'
Update_aE: no visible global function definition for 'runif'
Update_beta: no visible global function definition for 'rgamma'
Update_mu: no visible global function definition for 'rnorm'
Update_mu: no visible global function definition for 'runif'
Update_thetas : <anonymous>: no visible global function definition for
  'rnorm'
Update_thetas: no visible global function definition for 'runif'
calculate.all.pairwise.Fst: no visible global function definition for
  'combn'
plot_acceptance_rate: no visible global function definition for 'plot'
plot_acceptance_rate: no visible global function definition for
  'adjustcolor'
plot_acceptance_rate: no visible global function definition for
  'abline'
plot_acceptance_rate: no visible global function definition for
  'median'
plot_acceptance_rate: no visible global function definition for
  'polygon'
plot_all_phi_marginals: no visible global function definition for
  'devAskNewPage'
plot_all_phi_trace: no visible global function definition for
  'devAskNewPage'
plot_joint_marginal: no visible global function definition for 'plot'
plot_joint_marginal: no visible global function definition for
  'rainbow'
plot_joint_marginal: no visible global function definition for 'legend'
plot_marginal: no visible global function definition for 'plot'
plot_marginal: no visible global function definition for 'hist'
plot_marginal: no visible global function definition for 'lines'
plot_marginal: no visible global function definition for 'polygon'
plot_marginal: no visible global function definition for 'adjustcolor'
plot_marginal: no visible global function definition for 'segments'
plot_marginal: no visible global function definition for 'median'
plot_phi_marginal: no visible global function definition for 'plot'
plot_phi_marginal: no visible global function definition for 'hist'
plot_phi_marginal: no visible global function definition for 'lines'
plot_phi_marginal: no visible global function definition for 'polygon'
plot_phi_marginal: no visible global function definition for
  'adjustcolor'
plot_phi_marginal: no visible global function definition for 'segments'
plot_phi_marginal: no visible global function definition for 'median'
plot_phi_trace: no visible global function definition for 'plot'
plot_phi_trace: no visible global function definition for 'adjustcolor'
plot_phi_trace: no visible global function definition for 'abline'
plot_phi_trace: no visible global function definition for 'median'
plot_trace: no visible global function definition for 'plot'
plot_trace: no visible global function definition for 'adjustcolor'
plot_trace: no visible global function definition for 'abline'
plot_trace: no visible global function definition for 'median'
simulate_allele_count_data: no visible global function definition for
  'rbinom'
Undefined global functions or variables:
  abline adjustcolor combn devAskNewPage dexp dgamma dnorm dunif hist
  legend lines median plot polygon rainbow rbinom rexp rgamma rnorm
  runif sd segments
Consider adding
  importFrom("grDevices", "adjustcolor", "devAskNewPage", "rainbow")
  importFrom("graphics", "abline", "hist", "legend", "lines", "plot",
             "polygon", "segments")
  importFrom("stats", "dexp", "dgamma", "dnorm", "dunif", "median",
             "rbinom", "rexp", "rgamma", "rnorm", "runif", "sd")
  importFrom("utils", "combn")
to your NAMESPACE file.