R: Create bibliographic information from PDF Metadata.

ReadPDFs {RefManageR} | R Documentation

## Create bibliographic information from PDF Metadata.

### Description

This function creates bibliographic information by reading the Metadata and text of PDFs stored in a user specified directory using Poppler (https://poppler.freedesktop.org/). IF requested, the function first searches for DOIs and downloads `BibTeX` entries from `ReadCrossRef` if DOIs are found. If this is not requested or a DOI is not found for an entry, an attempt is made to build a BibTeX entry from the metadata and text.

### Usage

    ReadPDFs(path, .enc = "UTF-8", recursive = TRUE, use.crossref = TRUE,
      use.metadata = TRUE, progress = FALSE)

### Arguments

`path` | character; path to directory containing pdfs or filename of one pdf. `normalizePath` is used on the specified path
`.enc` | character; text encoding to use for reading pdf and creating BibEntry object. Available encodings for Poppler can be found using `system("pdfinfo -listenc")`. The encoding must also be listed in `iconvlist()`.
`recursive` | logical; same as `list.files`. Should pdfs in subdirectories of path be used?
`use.crossref` | logical; should an attempt be made to download bibliographic information from CrossRef if any Document Object Identifiers (DOIs) are found?
`use.metadata` | logical; should the PDF metadata also be used to help create entries?
`progress` | logical; should progress bar be generated when fetching from CrossRef?

### Details

This function requires that the `pdfinfo` utility from Poppler PDF https://poppler.freedesktop.org/ be installed.

This function will create only `Article` or `Misc` `BibTeX` entries.

The absolute path to each file will be stored in the bib entry in a field called ‘file’, which is recognized by `BibLaTeX` (though not printed by any standard style) and can be used by the `open.BibEntry` function to open the PDF in the default viewer.

If the keywords metadata field is available, it will be added to the bib entry in a field ‘keywords’, which is recognized by `BibLaTeX`.

### Value

An object of class BibEntry.

### References

https://poppler.freedesktop.org/

### See Also

`ReadCrossRef`, `BibEntry`, `open.BibEntry`

### Examples

    ## Not run:
    path <- system.file("doc", package = "RefManageR")
    ReadPDFs(path)

    ## End(Not run)

[Package RefManageR version 1.2.0 Index]