

{"id":5206,"date":"2017-03-27T16:30:32","date_gmt":"2017-03-27T21:30:32","guid":{"rendered":"https:\/\/rud.is\/b\/?p=5206"},"modified":"2018-03-07T17:21:42","modified_gmt":"2018-03-07T22:21:42","slug":"all-in-on-r%e2%81%b4-progress-bars-on-first-post","status":"publish","type":"post","link":"https:\/\/rud.is\/b\/2017\/03\/27\/all-in-on-r%e2%81%b4-progress-bars-on-first-post\/","title":{"rendered":"All-in on R\u2076 : Progress [bars] on first post"},"content":{"rendered":"<p>@eddelbuettel&#8217;s <a href=\"http:\/\/dirk.eddelbuettel.com\/blog\/2017\/03\/27\/#000_introducing_r4\">idea<\/a> is a good one. (it&#8217;s a quick read&hellip;jump there and come back). We&#8217;ll avoid confusion and call it R\u2076 over here. Feel free to don the superclass.<\/p>\n<p>I often wait for a complete example or new package announcement to blog something when a briefly explained snippet might have sufficient utility for many R users. Also, <a href=\"https:\/\/www.socialmediadelivered.com\/blog\/2015\/10\/29\/the-lifespan-of-a-social-media-post\">tweets are fleeting<\/a> and twitter could end up on the island of misfit social media sites if it can&#8217;t generate revenue or find a giant buyer this year. Don&#8217;t get me wrong, twitter convos are fine\/useful, but blogs are at least semi-permanent, especially if you let them be hoovered up by the Internet Archive (&#8220;Save Page Now&#8221; on their site or use this <a href=\"https:\/\/blog.archive.org\/2017\/01\/13\/wayback-machine-chrome-extension-now-available\/\">handy Chrome extension<\/a>).<\/p>\n<p>I&#8217;ll tag all R\u2076 posts as &#8220;r6&#8221; if you want to auto-filter those out of your stream or just page through them.<\/p>\n<p>I&#8217;ll also lead off the these micro-posts with a simple one: adding progress bars to your tidyverse <code>purrr<\/code> operations.<\/p>\n<p>The <code>purrr::map*<\/code> functions enable expressive and type-safe vectorized operations. Mine are usually over a few million\/billion IPv4 addresses or domain names\/URLs and often involve moderately lengthy tasks so I usually add the ability to incorporate progress bars to functions I make (and, I&#8217;m trying hard to get out of the bad habit of long-ish anonymous functions in <code>purrr<\/code> calls). The following is a toy example, but it&#8217;s a working example you can run in your interactive R session now:<\/p>\n<pre id=\"r4-progress\"><code class=\"language-r\">library(tidyverse)\r\n\r\narduously_long_nchar &lt;- function(input_var, .pb=NULL) {\r\n  \r\n  if ((!is.null(.pb)) &amp;&amp; inherits(.pb, &quot;Progress&quot;) &amp;&amp; (.pb$i &lt; .pb$n)) .pb$tick()$print()\r\n  \r\n  Sys.sleep(1)\r\n  \r\n  nchar(input_var)\r\n  \r\n}\r\n\r\npb &lt;- progress_estimated(length(letters))\r\n\r\nmap_int(letters, arduously_long_nchar, .pb=pb)<\/code><\/pre>\n<p>And, yes, I did make you wait ~26 seconds (unless you were intrepid enough to reduce the amount of sleep time :-)<\/p>\n<p>If you happen to forget the progress bar object (or know you don&#8217;t need one):<\/p>\n<pre id=\"r4-progress-01\"><code class=\"language-r\">map_int(letters, arduously_long_nchar)<\/code><\/pre>\n<p>the function still works (sans progress bars).<\/p>\n<p>If you happen to also mess up what you pass in to the <code>.pb<\/code> parameter or get your progress bar out of sync with your object it won&#8217;t error out on you (it can be made <em>much<\/em> safer and wrapped in another function, say &mdash;\u00a0<code>tick_off(.pb)<\/code> &mdash; but this is supposed to be a small post).<\/p>\n<p>Comments\/feedback\/your-own-progress-methods are most welcome and encouraged.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>@eddelbuettel&#8217;s idea is a good one. (it&#8217;s a quick read&hellip;jump there and come back). We&#8217;ll avoid confusion and call it R\u2076 over here. Feel free to don the superclass. I often wait for a complete example or new package announcement to blog something when a briefly explained snippet might have sufficient utility for many R [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":3,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[779,785,91],"tags":[810,787],"class_list":["post-5206","post","type-post","status-publish","format-standard","hentry","category-dplyr","category-purrr","category-r","tag-post","tag-r6"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>All-in on R\u2076 : Progress [bars] on first post - rud.is<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rud.is\/b\/2017\/03\/27\/all-in-on-r\u2074-progress-bars-on-first-post\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"All-in on R\u2076 : Progress [bars] on first post - rud.is\" \/>\n<meta property=\"og:description\" content=\"@eddelbuettel&#8217;s idea is a good one. 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Feel free to use R\u2076 (I'll figure out an acronym later).\u2026","rel":"","context":"In &quot;R&quot;","block_context":{"text":"R","link":"https:\/\/rud.is\/b\/category\/r\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7733,"url":"https:\/\/rud.is\/b\/2017\/12\/30\/r%e2%81%b6-capture-tweets-with-tweet_shot\/","url_meta":{"origin":5206,"position":1},"title":"R\u2076 \u2014 Capture Tweets with tweet_shot()","author":"hrbrmstr","date":"2017-12-30","format":false,"excerpt":"(You can find all R\u2076 posts here) UPDATE 2018-01-01 --- this has been added to rtweet (GH version). A Twitter discussion: I'm going to keep my eyes out for this one! Would love to have an easy way to embed tweets in Rmd talks!\u2014 Jeff Hollister (@jhollist) December 30, 2017\u2026","rel":"","context":"In &quot;R&quot;","block_context":{"text":"R","link":"https:\/\/rud.is\/b\/category\/r\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/rud.is\/b\/wp-content\/uploads\/2017\/12\/preview.png?fit=517%2C899&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5946,"url":"https:\/\/rud.is\/b\/2017\/05\/14\/r%e2%81%b6-tracking-wannacry-bitcoin-wallet-payments-with-r\/","url_meta":{"origin":5206,"position":2},"title":"R\u2076 \u2014 Tracking WannaCry Bitcoin Wallet Payments with R","author":"hrbrmstr","date":"2017-05-14","format":false,"excerpt":"If you follow me on Twitter or monitor @Rapid7's Community Blog you know I've been involved a bit in the WannaCry ransomworm triage. 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Pinging @dataandme @hrbrmstr\u2014 Roel (@RMHoge) April 12,\u2026","rel":"","context":"In &quot;R&quot;","block_context":{"text":"R","link":"https:\/\/rud.is\/b\/category\/r\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5580,"url":"https:\/\/rud.is\/b\/2017\/04\/02\/simple-offline-airport-wi-fi-tracker-in-r\/","url_meta":{"origin":5206,"position":5},"title":"Simple Offline Airport Wi-Fi Tracker in R","author":"hrbrmstr","date":"2017-04-02","format":false,"excerpt":"@visualisingdata rebroadcast this tweet today: Wireless Passwords From Airports And Lounges Around The World https:\/\/t.co\/OV0WJfwj8E\u2014 deb verhoeven (@bestqualitycrab) April 2, 2017 The Google Maps interface is a bit meh and the \"formatted\" data is also a bit meh but the data is useful when travelling (NOTE: always use a VPN\u2026","rel":"","context":"In &quot;R&quot;","block_context":{"text":"R","link":"https:\/\/rud.is\/b\/category\/r\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/posts\/5206","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/comments?post=5206"}],"version-history":[{"count":0,"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/posts\/5206\/revisions"}],"wp:attachment":[{"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/media?parent=5206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/categories?post=5206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rud.is\/b\/wp-json\/wp\/v2\/tags?post=5206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}