Error(s) in re-building vignettes:
--- re-building ‘Analyzing-workloops.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Quitting from lines 64-85 (Analyzing-workloops.Rmd) 
Error: processing vignette 'Analyzing-workloops.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Analyzing-workloops.Rmd’

--- re-building ‘Calculating-twitch-kinetics.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Quitting from lines 54-61 (Calculating-twitch-kinetics.Rmd) 
Error: processing vignette 'Calculating-twitch-kinetics.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Calculating-twitch-kinetics.Rmd’

--- re-building ‘Introduction-to-workloopR.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
--- finished re-building ‘Introduction-to-workloopR.Rmd’

--- re-building ‘Plotting-workloopR.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

Attaching package: 'purrr'

The following object is masked from 'package:magrittr':

    set_names


Attaching package: 'tidyr'

The following object is masked from 'package:magrittr':

    extract


Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Quitting from lines 52-75 (Plotting-workloopR.Rmd) 
Error: processing vignette 'Plotting-workloopR.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Plotting-workloopR.Rmd’

--- re-building ‘batch-processing.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.

Attaching package: 'purrr'

The following object is masked from 'package:magrittr':

    set_names

--- finished re-building ‘batch-processing.Rmd’

--- re-building ‘non-ddf-sources.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Quitting from lines 74-87 (non-ddf-sources.Rmd) 
Error: processing vignette 'non-ddf-sources.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘non-ddf-sources.Rmd’

SUMMARY: processing the following files failed:
  ‘Analyzing-workloops.Rmd’ ‘Calculating-twitch-kinetics.Rmd’
  ‘Plotting-workloopR.Rmd’ ‘non-ddf-sources.Rmd’

Error: Vignette re-building failed.
Execution halted