PLS_beta: no visible global function definition for 'Gamma'
PLS_beta: no visible global function definition for 'gaussian'
PLS_beta: no visible global function definition for 'inverse.gaussian'
PLS_beta: no visible global function definition for 'binomial'
PLS_beta: no visible global function definition for 'poisson'
PLS_beta: no visible global function definition for 'is'
PLS_beta: no visible global function definition for 'weighted.mean'
PLS_beta: no visible binding for global variable 'weighted.mean'
PLS_beta: no visible global function definition for 'pnorm'
PLS_beta: no visible global function definition for 'coef'
PLS_beta: no visible global function definition for 'glm'
PLS_beta: no visible binding for global variable 'na.exclude'
PLS_beta: no visible global function definition for 'AIC'
PLS_beta: no visible global function definition for 'residuals.glm'
PLS_beta: no visible global function definition for 'model.frame'
PLS_beta: no visible global function definition for 'model.matrix'
PLS_beta: no visible global function definition for 'residuals'
PLS_beta: no visible global function definition for 'lm'
PLS_beta_formula: no visible binding for global variable 'na.exclude'
PLS_beta_formula: no visible global function definition for 'is'
PLS_beta_formula: no visible binding for global variable 'na.pass'
PLS_beta_formula: no visible global function definition for
  'as.formula'
PLS_beta_formula: no visible global function definition for
  'model.response'
PLS_beta_formula: no visible global function definition for
  'is.empty.model'
PLS_beta_formula: no visible global function definition for
  'model.matrix'
PLS_beta_formula: no visible global function definition for
  'model.weights'
PLS_beta_formula: no visible global function definition for
  'model.offset'
PLS_beta_formula: no visible global function definition for 'terms'
PLS_beta_formula: no visible global function definition for
  'delete.response'
PLS_beta_formula: no visible global function definition for 'Gamma'
PLS_beta_formula: no visible global function definition for 'gaussian'
PLS_beta_formula: no visible global function definition for
  'inverse.gaussian'
PLS_beta_formula: no visible global function definition for 'binomial'
PLS_beta_formula: no visible global function definition for 'poisson'
PLS_beta_formula: no visible global function definition for
  'weighted.mean'
PLS_beta_formula: no visible binding for global variable
  'weighted.mean'
PLS_beta_formula: no visible global function definition for 'pnorm'
PLS_beta_formula: no visible global function definition for 'coef'
PLS_beta_formula: no visible global function definition for 'AIC'
PLS_beta_formula: no visible global function definition for
  'residuals.glm'
PLS_beta_formula: no visible global function definition for
  'model.frame'
PLS_beta_formula: no visible global function definition for 'residuals'
PLS_beta_formula: no visible global function definition for 'lm'
PLS_beta_kfoldcv: no visible global function definition for 'Gamma'
PLS_beta_kfoldcv: no visible global function definition for 'gaussian'
PLS_beta_kfoldcv: no visible global function definition for
  'inverse.gaussian'
PLS_beta_kfoldcv: no visible global function definition for 'binomial'
PLS_beta_kfoldcv: no visible global function definition for 'poisson'
PLS_beta_kfoldcv: no visible global function definition for 'is'
PLS_beta_kfoldcv_formula: no visible binding for global variable
  'na.pass'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'as.formula'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'model.response'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'is.empty.model'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'model.matrix'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'model.weights'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'model.offset'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'terms'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'delete.response'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'Gamma'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'gaussian'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'inverse.gaussian'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'binomial'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'poisson'
PLS_beta_kfoldcv_formula: no visible global function definition for
  'is'
PLS_beta_wvc: no visible global function definition for 'Gamma'
PLS_beta_wvc: no visible global function definition for 'gaussian'
PLS_beta_wvc: no visible global function definition for
  'inverse.gaussian'
PLS_beta_wvc: no visible global function definition for 'binomial'
PLS_beta_wvc: no visible global function definition for 'poisson'
PLS_beta_wvc: no visible global function definition for 'is'
PLS_beta_wvc: no visible global function definition for 'weighted.mean'
PLS_beta_wvc: no visible binding for global variable 'weighted.mean'
PLS_beta_wvc: no visible global function definition for 'coef'
PLS_beta_wvc: no visible global function definition for 'glm'
PLS_beta_wvc: no visible binding for global variable 'na.exclude'
kfolds2Chisq: no visible global function definition for 'model.frame'
kfolds2Chisq: no visible global function definition for 'model.matrix'
kfolds2Chisqind: no visible global function definition for
  'model.frame'
kfolds2Chisqind: no visible global function definition for
  'model.matrix'
simul_data_UniYX_beta: no visible global function definition for
  'make.link'
simul_data_UniYX_beta: no visible global function definition for
  'rbeta'
Undefined global functions or variables:
  AIC Gamma as.formula binomial coef delete.response gaussian glm
  inverse.gaussian is is.empty.model lm make.link model.frame
  model.matrix model.offset model.response model.weights na.exclude
  na.pass pnorm poisson rbeta residuals residuals.glm terms
  weighted.mean
Consider adding
  importFrom("methods", "is")
  importFrom("stats", "AIC", "Gamma", "as.formula", "binomial", "coef",
             "delete.response", "gaussian", "glm", "inverse.gaussian",
             "is.empty.model", "lm", "make.link", "model.frame",
             "model.matrix", "model.offset", "model.response",
             "model.weights", "na.exclude", "na.pass", "pnorm",
             "poisson", "rbeta", "residuals", "residuals.glm", "terms",
             "weighted.mean")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').