https://www.rostrum.blog/tags/polite/ Recent content in Polite on rostrum.blog Hugo -- gohugo.io en-gb Sat, 31 Jul 2021 00:00:00 +0000 https://www.rostrum.blog/2021/07/31/og-emoji-svg/ Sat, 31 Jul 2021 00:00:00 +0000 https://www.rostrum.blog/2021/07/31/og-emoji-svg/ tl;dr I wrote code to produce SVG versions of the ‘first-ever’ emoji set. Using R, I scraped Emojipedia with the {polite} package and then handled images with {png}, {magick} and {svglite}. Important archival work I posted recently on creating ‘pixel art’ in R and have since stumbled upon an old post by mikefc on the coolbutuseless blog with a method that makes it easier to convert from an image to its ‘pixels’. https://www.rostrum.blog/2019/12/27/pkgs-2019/ Fri, 27 Dec 2019 00:00:00 +0000 https://www.rostrum.blog/2019/12/27/pkgs-2019/ Marie Kondo (Netflix via Giphy) Thank you package-makers I’ve used a lot of packages in 2019 and many have brought great joy to my R experience. Thank you to everyone who has created, maintained or contributed to a package this year. Some particular packages of note for me have been: 🤖 {usethis} by Hadley Wickham and Jenny Bryan 🦆 {drake} by Will Landau 🐈 {purrr} by Lionel Henry and Hadley Wickham And some honourable mentions are: https://www.rostrum.blog/2019/12/08/altcheckr/ Sun, 08 Dec 2019 00:00:00 +0000 https://www.rostrum.blog/2019/12/08/altcheckr/ tl;dr I’ve made a small R package called {altcheckr} that checks the accessibility of images on web pages. It has functions that (1) scrape attributes from HTML elements on a web page and (2) apply simple rules to indicate the suitability of the alt text provided. To use: remotes::install_github("matt-dray/altcheckr") images <- alt_get("https://www.bbc.co.uk/news") alt_check(images) I’m not an expert and the package has not been user tested. Accessibility A web site is accessible if everyone can engage with its content. https://www.rostrum.blog/2019/03/04/polite-webscrape/ Mon, 04 Mar 2019 00:00:00 +0000 https://www.rostrum.blog/2019/03/04/polite-webscrape/ Reaping with rvest Ah, salutations, and welcome to this blog post about polite web scraping. Please do come in. I’ll take your coat. How are you? Would you like a cup of tea? Oh, I insist! Speaking of tea, perhaps you’d care to join me in genial conversation about it. Where to begin? Let’s draw inspiration from popular posts on the Tea subreddit of Reddit. I’ll fetch the post titles using the {rvest} package from Hadley Wickham and get the correct CSS selector using SelectorGadget by Andrew Cantino and Kyle Maxwell.