Error(s) in re-building vignettes:
  ...
--- re-building ‘DriveML.Rmd’ using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette ‘DriveML.Rmd’ failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘DriveML.Rmd’

SUMMARY: processing the following file failed:
  ‘DriveML.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘DriveML.Rmd’ using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette ‘DriveML.Rmd’ failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘DriveML.Rmd’

SUMMARY: processing the following file failed:
  ‘DriveML.Rmd’

Error: Vignette re-building failed.
Execution halted
Note: found 8 marked UTF-8 strings
Error(s) in re-building vignettes:
--- re-building ‘DriveML.Rmd’ using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette 'DriveML.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘DriveML.Rmd’

SUMMARY: processing the following file failed:
  ‘DriveML.Rmd’

Error: Vignette re-building failed.
Execution halted
Note: found 8 marked UTF-8 strings
Error(s) in re-building vignettes:
--- re-building ‘DriveML.Rmd’ using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette 'DriveML.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘DriveML.Rmd’

SUMMARY: processing the following file failed:
  ‘DriveML.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘DriveML.Rmd’ using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette 'DriveML.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘DriveML.Rmd’

SUMMARY: processing the following file failed:
  ‘DriveML.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘DriveML.Rmd’ using rmarkdown
Pandoc is required to build R Markdown vignettes but not available. Please make sure it is installed.
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette 'DriveML.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘DriveML.Rmd’

SUMMARY: processing the following file failed:
  ‘DriveML.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'DriveML.Rmd' using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette 'DriveML.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building 'DriveML.Rmd'

SUMMARY: processing the following file failed:
  'DriveML.Rmd'

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘DriveML.Rmd’ using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette ‘DriveML.Rmd’ failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘DriveML.Rmd’

SUMMARY: processing the following file failed:
  ‘DriveML.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘DriveML.Rmd’ using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette ‘DriveML.Rmd’ failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘DriveML.Rmd’

SUMMARY: processing the following file failed:
  ‘DriveML.Rmd’

Error: Vignette re-building failed.
Execution halted
Note: found 8 marked UTF-8 strings
Note: found 8 marked UTF-8 strings
Error(s) in re-building vignettes:
--- re-building 'DriveML.Rmd' using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette 'DriveML.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building 'DriveML.Rmd'

SUMMARY: processing the following file failed:
  'DriveML.Rmd'

Error: Vignette re-building failed.
Execution halted
Note: found 8 marked UTF-8 strings
Note: found 8 marked UTF-8 strings
Error(s) in re-building vignettes:
--- re-building 'DriveML.Rmd' using rmarkdown
Quitting from lines 341-343 (DriveML.Rmd) 
Error: processing vignette 'DriveML.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building 'DriveML.Rmd'

SUMMARY: processing the following file failed:
  'DriveML.Rmd'

Error: Vignette re-building failed.
Execution halted