MAPE: no visible global function definition for 'is'
MAPE: no visible global function definition for 'new'
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for 'is'
MAPE: no visible global function definition for 'new'
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for 'is'
MAPE: no visible global function definition for 'new'
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for ‘is’
MAPE: no visible global function definition for ‘new’
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
MAPE: no visible global function definition for 'is'
MAPE: no visible global function definition for 'new'
Undefined global functions or variables:
  is new
Consider adding
  importFrom("methods", "is", "new")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').