word_count: Word Count a PDF
In leeper/pdfcount: Word Counts for PDF Documents

Description Usage Arguments Details Value Author(s) Examples

View source: R/word_count.R

Obtain a Word Count from a PDF

word_count(document, pages = NULL, count_numbers = TRUE,
  count_captions = FALSE, count_equations = FALSE,
  split_hyphenated = FALSE, split_urls = FALSE,
  verbose = getOption("verbose", FALSE))

`document`	A file path specifying a PDF document.
`pages`	Optionally, an integer vector specifying a subset of pages to count from. Negative values serve as negative subsets.
`count_numbers`	A logical specifying whether to count numbers as words.
`count_captions`	A logical specifying whether to count lines beginning with “Table” or “Figure” in word count.
`count_equations`	A logical specifying whether to count lines ending with “([Number])” in word count.
`split_hyphenated`	A logical specifying whether to split hyphenated words or expressions as separate words.
`split_urls`	A logical specifying whether to split URLs into multiple words when counting.
`verbose`	A logical specifying whether to be verbose. If `TRUE`, the page and word counts are printed to the console and the result is is returned invisibly. If `FALSE`, the result is visible.

This is useful for obtaining a word count for a LaTeX-compiled PDF. Counting words in the tex source is a likely undercount (due to missing citations, cross-references, and parenthetical citations). Counting words from the PDF is likely over count (due to hyphenation issues, URLs, ligatures, tables and figures, and various other things). This function tries to obtain a word from the PDF while accounting for some of the sources of overcounting.

It is often desirable to have word counts excluding tables and figures. A solution on TeX StackExchange (https://tex.stackexchange.com/a/352394/30039) provides guidance on how to exclude tables and figures (or any arbitrary LaTeX environment) from a compiled document, which may be useful before attempting to word count the PDF.

A data frame with two columns, one specifying page and the other specifying word count for that page.

Thomas J. Leeper <thosjleeper@gmail.com>

## Not run: 
# "R-intro.pdf" manual
rintro <- file.path(Sys.getenv("R_HOME"), "doc", "manual", "R-intro.pdf")

# Online service at http://www.montereylanguages.com/pdf-word-count-online-free-tool.html
# claims the word count to be 36,530 words

# Microsoft Word (PDF conversion) word count is 36,869 words

word_count(rintro)      # all pages (105 pages, 37870 words)
word_count(rintro, 1:3) # pages 1-3
word_count(rintro, -1)  # skip first page

## End(Not run)