extract_images: Extract and save images

In taylorgrant/twAccount: Twitter Timelines, Images, and Topic Models

Extract and save images

Description

Work through an rtweet timeline object to extract and save images in specific folders. If multiple images were posted in a grid, this extracts each and puts them into a grid format. If 2 images, a 1x1, if more than 2 it automatically gets put into a 2x2 tile using magick::image_montage(). A helper function reads and scales images so that we can montage without needing to map, per https://stackoverflow.com/questions/52833932/pass-a-list-of-image-objects-to-a-r-magick-function-instead-of-a-vector

Usage

extract_images(year, index, img_ct, img)

Arguments

year	Year of the Twitter post
index	Image number; each tweet/image is numbered
img_ct	How many images were used in the Tweet
img	url of the image(s)

Examples

## Not run: 
tmp <- tibble(status_id = 1144617178710388737,
ext_media_url = "http://pbs.twimg.com/media/D-J_QYPXoAAWw2d.jpg",
creaated_at = 2019-06-28 07:42:56, year =2019, index = 01, img_ct = 1)
purrr::pwalk(list(tmp$year, tmp$index, tmp$img_ct, tmp$ext_media_url), extract_images)

## End(Not run)

taylorgrant/twAccount documentation built on March 20, 2022, 7:33 p.m.