`density` option when reading PDFs with `image_read`

[pboesu]

PDFs appear to be down sampled quite badly when you read them in currently. Is there a way to add a density argument to specify the resolution of a PDF when using image_read()? Something analogous to command line statements like convert -density 300 file.pdf file.png

[jeroen]

Right I noticed this as well. I'll try to figure this out. If you're on linux or mac, you can render pdf via pdftools:

library(pdftools)
library(magick)
bitmap <- pdf_render_page("https://cran.r-project.org/web/packages/magick/magick.pdf", 1)
img <- image_read(bitmap)

[jeroen]

I have added a desnity paramamter to image_read:

download.file("https://cran.r-project.org/web/packages/magick/magick.pdf", "magick.pdf")
page <- image_read("magick.pdf[1]", density = "300x300")

[pboesu]

Brilliant! Thank you.