make_thumbnails

Convert Pages to Image Thumbnails

make_thumbnails(file, outdir = NULL, pages = NULL, format = c("png",
  "jpeg", "bmp", "gif"), resolution = 72, password = NULL, copy = FALSE)

Arguments

file	A character string specifying the path or URL to a PDF file.
outdir	An optional character string specifying a directory into which to split the resulting files. If NULL, the outdir is tempdir(). If file is a URL, both file and thumbnails are stored in the R session's temporary directory.
pages	An optional integer vector specifying pages to extract from.
format	A character string specifying an image file format.
resolution	A numeric value specifying the image resolution in DPI.
password	Optionally, a character string containing a user password to access a secured PDF.
copy	Specifies whether the original local file(s) should be copied to tempdir() before processing. FALSE by default. The argument is ignored if file is URL.

Value

A character vector of file paths.

Details

This function save each (specified) page of a document as an image with 720 dpi resolution. Images are saved in the same directory as the original file, with file names specified by the original file name, a page number, and the corresponding file format extension.

Note

This may generate Java “INFO” messages in the console, which can be safely ignored.

References

Tabula

See also

extract_tables, extract_text, make_thumbnails

Author

Thomas J. Leeper <[email protected]>

Examples

# \donttest{
# simple demo file
f <- system.file("examples", "data.pdf", package = "tabulizer")

make_thumbnails(f)
#> [1] "/tmp/RtmpJ75q8g/data1.png" "/tmp/RtmpJ75q8g/data2.png"
#> [3] "/tmp/RtmpJ75q8g/data3.png"
# }