Error(s) in re-building vignettes:
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--- re-building ‘statVisual.Rmd’ using rmarkdown
Loading required package: BiocGenerics
Loading required package: parallel

Attaching package: 'BiocGenerics'

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    dirname, do.call, duplicated, eval, evalq, get, grep, grepl,
    intersect, is.unsorted, lapply, mapply, match, mget, order,
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Welcome to Bioconductor

    Vignettes contain introductory material; view with
    'browseVignettes()'. To cite Bioconductor, see
    'citation("Biobase")', and for packages 'citation("pkgname")'.


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Loading required package: ggplot2
Welcome! Related Books: `Practical Guide To Cluster Analysis in R` at https://goo.gl/13EFCZ
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Type 'citation("pROC")' for a citation.

Attaching package: 'pROC'

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randomForest 4.6-14
Type rfNews() to see new features/changes/bug fixes.

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Loading required package: rpart
Quitting from lines 320-325 (statVisual.Rmd) 
Error: processing vignette 'statVisual.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘statVisual.Rmd’

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

Error: Vignette re-building failed.
Execution halted