Error(s) in re-building vignettes:
  ...
--- re-building ‘Biplots_in_1D.Rmd’ using rmarkdown

Quitting from Biplots_in_1D.Rmd:60-64 [unnamed-chunk-4]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `loadNamespace()`:
! there is no package called 'caret'
---
Backtrace:
    ▆
 1. ├─base::plot(...)
 2. ├─biplotEZ::classify(...)
 3. └─base::loadNamespace(x)
 4.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
 5.     └─base (local) withOneRestart(expr, restarts[[1L]])
 6.       └─base (local) doWithOneRestart(return(expr), restart)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'Biplots_in_1D.Rmd' failed with diagnostics:
there is no package called 'caret'
--- failed re-building ‘Biplots_in_1D.Rmd’

--- re-building ‘Biplots_in_3D.Rmd’ using rmarkdown
--- finished re-building ‘Biplots_in_3D.Rmd’

--- re-building ‘CA_in_biplotEZ.Rmd’ using rmarkdown
--- finished re-building ‘CA_in_biplotEZ.Rmd’

--- re-building ‘Class_separation.Rmd’ using rmarkdown

Quitting from Class_separation.Rmd:238-243 [unnamed-chunk-9]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `loadNamespace()`:
! there is no package called 'caret'
---
Backtrace:
    ▆
 1. ├─base::plot(...)
 2. ├─biplotEZ::classify(...)
 3. └─base::loadNamespace(x)
 4.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
 5.     └─base (local) withOneRestart(expr, restarts[[1L]])
 6.       └─base (local) doWithOneRestart(return(expr), restart)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'Class_separation.Rmd' failed with diagnostics:
there is no package called 'caret'
--- failed re-building ‘Class_separation.Rmd’

--- re-building ‘MDS.Rmd’ using rmarkdown
--- finished re-building ‘MDS.Rmd’

--- re-building ‘biplotEZ.Rmd’ using rmarkdown
--- finished re-building ‘biplotEZ.Rmd’

--- re-building ‘biplotEZ_enhancements.Rmd’ using rmarkdown
--- finished re-building ‘biplotEZ_enhancements.Rmd’

SUMMARY: processing the following files failed:
  ‘Biplots_in_1D.Rmd’ ‘Class_separation.Rmd’

Error: Vignette re-building failed.
Execution halted