make_thumbnails: make_thumbnails

Description Usage Arguments Details Value Note Author(s) References See Also Examples

View source: R/make_thumbnails.R

Description

Convert Pages to Image Thumbnails

Usage

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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.

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.

Value

A character vector of file paths.

Note

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

Author(s)

Thomas J. Leeper <[email protected]>

References

Tabula

See Also

extract_tables, extract_text, make_thumbnails

Examples

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

make_thumbnails(f)

ropensci/tabulizer documentation built on June 10, 2018, 3:11 p.m.