abs_dif: no visible global function definition for 'as.formula'
env_dif: no visible global function definition for 'lm'
env_dif: no visible global function definition for 'as.formula'
env_dif_logistic: no visible global function definition for
  'as.formula'
fam_env: no visible global function definition for 'as.formula'
log_dif: no visible global function definition for 'as.formula'
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for 'as.formula'
env_dif: no visible global function definition for 'lm'
env_dif: no visible global function definition for 'as.formula'
env_dif_logistic: no visible global function definition for
  'as.formula'
fam_env: no visible global function definition for 'as.formula'
log_dif: no visible global function definition for 'as.formula'
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for 'as.formula'
env_dif: no visible global function definition for 'lm'
env_dif: no visible global function definition for 'as.formula'
env_dif_logistic: no visible global function definition for
  'as.formula'
fam_env: no visible global function definition for 'as.formula'
log_dif: no visible global function definition for 'as.formula'
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for ‘as.formula’
env_dif: no visible global function definition for ‘lm’
env_dif: no visible global function definition for ‘as.formula’
env_dif_logistic: no visible global function definition for
  ‘as.formula’
fam_env: no visible global function definition for ‘as.formula’
log_dif: no visible global function definition for ‘as.formula’
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.
abs_dif: no visible global function definition for 'as.formula'
env_dif: no visible global function definition for 'lm'
env_dif: no visible global function definition for 'as.formula'
env_dif_logistic: no visible global function definition for
  'as.formula'
fam_env: no visible global function definition for 'as.formula'
log_dif: no visible global function definition for 'as.formula'
Undefined global functions or variables:
  as.formula lm
Consider adding
  importFrom("stats", "as.formula", "lm")
to your NAMESPACE file.