rmd2pdf: no visible global function definition for 'tail'
rnw2pdf: no visible global function definition for 'tail'
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for 'tail'
rnw2pdf: no visible global function definition for 'tail'
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for 'tail'
rnw2pdf: no visible global function definition for 'tail'
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for ‘tail’
rnw2pdf: no visible global function definition for ‘tail’
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
rmd2pdf: no visible global function definition for 'tail'
rnw2pdf: no visible global function definition for 'tail'
Undefined global functions or variables:
  tail
Consider adding
  importFrom("utils", "tail")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory