{"id":1413,"date":"2023-07-26T11:55:18","date_gmt":"2023-07-26T11:55:18","guid":{"rendered":"https:\/\/statorials.org\/nl\/str_replace-in-r\/"},"modified":"2023-07-26T11:55:18","modified_gmt":"2023-07-26T11:55:18","slug":"str_replace-in-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/str_replace-in-r\/","title":{"rendered":"Hoe str_replace in r te gebruiken (met voorbeelden)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">De functie <strong>str_replace()<\/strong> van het <a href=\"https:\/\/stringr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">stringr-<\/a> pakket in R kan worden gebruikt om overeenkomende patronen in een string te vervangen. Deze functie gebruikt de volgende syntaxis:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>str_replace(tekenreeks, patroon, vervanging)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Goud:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>tekenreeks:<\/strong> karaktervector<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>model:<\/strong> Model waarnaar gezocht wordt<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>vervanging:<\/strong> een vector van vervangende karakters<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Deze tutorial biedt verschillende voorbeelden van praktisch gebruik van deze functie op het volgende dataframe:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('team_A', 'team_B', 'team_C', 'team_D'),\n                 conference=c('West', 'West', 'East', 'East'),\n                 dots=c(88, 97, 94, 104))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n    team conference points\n1 team_A West 88\n2 team_B West 97\n3 team_C East 94\n4 team_D East 104<\/strong><\/pre>\n<h2> <strong><span style=\"color: #000000;\">Voorbeeld 1: Vervang de string door een patroon<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u de tekenreeks &#8218;West&#8216; vervangt door &#8218;Western&#8216; in de conferentiekolom:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #993300;\">library<\/span> (stringr)<\/span>\n\n#replace \"West\" with \"Western\" in the conference column<\/span>\ndf$conference &lt;- <span style=\"color: #3366ff;\">str_replace<\/span> (df$conference, \" <span style=\"color: #008000;\">West<\/span> \", \" <span style=\"color: #008000;\">Western<\/span> \")\n\n<span style=\"color: #008080;\">#view data frame\n<span style=\"color: #000000;\">df<\/span>\n\n<span style=\"color: #000000;\">team conference points\n1 team_A Western 88\n2 team_B Western 97\n3 team_C East 94\n4 team_D East 104\n<\/span><\/span><\/strong><\/pre>\n<h2> <strong><span style=\"color: #000000;\">Voorbeeld 2: Tekenreeks vervangen door niets<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u de tekenreeks &#8222;team_&#8220; vervangt door niets in de teamkolom:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#replace \"team_\" with nothing in the team column<\/span>\ndf$team&lt;- <span style=\"color: #3366ff;\">str_replace<\/span> (df$team, \" <span style=\"color: #008000;\">team_<\/span> \", \"\")\n\n<span style=\"color: #008080;\">#view data frame\n<span style=\"color: #000000;\">df\n\n  team conference points\n1 A West 88\n2 B West 97\n3C East 94\n4D East 104\n<\/span><\/span><\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Voorbeeld 3: Vervang meerdere strings<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u meerdere tekenreeksen in \u00e9\u00e9n kolom vervangt. Specifiek:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Verander \u201cWest\u201d in \u201cW\u201d<\/span><\/li>\n<li> <span style=\"color: #000000;\">Vervang \u201cEst\u201d door \u201cE\u201d<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Omdat we meerdere strings vervangen, gebruiken we de functie <strong>str_replace_all()<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#replace multiple words in the conference column<\/span>\ndf$conference &lt;- <span style=\"color: #3366ff;\">str_replace_all<\/span> (df$conference, c(\" <span style=\"color: #008000;\">West<\/span> \" = \" <span style=\"color: #008000;\">W<\/span> \", \" <span style=\"color: #008000;\">East<\/span> \" = \" <span style=\"color: #008000;\">E<\/span> \"))\n\n<span style=\"color: #008080;\">#view data frame\n<span style=\"color: #000000;\">df\n\n    team conference points\n1 team_A W 88\n2 team_B W 97\n3 team_C E 94\n4 team_D E 104<\/span><\/span><\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Aanvullende bronnen<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">In de volgende tutorials wordt uitgelegd hoe u andere veelvoorkomende taken in R kunt uitvoeren:<\/span><\/p>\n<p> Hoe gedeeltelijke stringmatching uit te voeren in R<br \/> <a href=\"https:\/\/statorials.org\/nl\/converteer-tekenreeksen-naar-datums-in-r\/\" target=\"_blank\" rel=\"noopener\">Hoe tekenreeksen naar datums in R te converteren<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/numeriek-teken-in-r\/\" target=\"_blank\" rel=\"noopener\">Hoe teken naar numeriek te converteren in R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>De functie str_replace() van het stringr- pakket in R kan worden gebruikt om overeenkomende patronen in een string te vervangen. Deze functie gebruikt de volgende syntaxis: str_replace(tekenreeks, patroon, vervanging) Goud: tekenreeks: karaktervector model: Model waarnaar gezocht wordt vervanging: een vector van vervangende karakters Deze tutorial biedt verschillende voorbeelden van praktisch gebruik van deze functie op [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1413","post","type-post","status-publish","format-standard","hentry","category-gids"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hoe str_replace in R te gebruiken (met voorbeelden) \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"In deze tutorial wordt uitgelegd hoe je de str_replace-functie in R gebruikt, met verschillende voorbeelden.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/nl\/str_replace-in-r\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hoe str_replace in R te gebruiken (met voorbeelden) \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"In deze tutorial wordt uitgelegd hoe je de str_replace-functie in R gebruikt, met verschillende voorbeelden.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/str_replace-in-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-26T11:55:18+00:00\" \/>\n<meta name=\"author\" content=\"Dr.benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr.benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"2\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/nl\/str_replace-in-r\/\",\"url\":\"https:\/\/statorials.org\/nl\/str_replace-in-r\/\",\"name\":\"Hoe str_replace in R te gebruiken (met voorbeelden) \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-26T11:55:18+00:00\",\"dateModified\":\"2023-07-26T11:55:18+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze tutorial wordt uitgelegd hoe je de str_replace-functie in R gebruikt, met verschillende voorbeelden.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/str_replace-in-r\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/str_replace-in-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/str_replace-in-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hoe str_replace in r te gebruiken (met voorbeelden)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/nl\/#website\",\"url\":\"https:\/\/statorials.org\/nl\/\",\"name\":\"Statorials\",\"description\":\"Uw gids voor statistische competentie\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/nl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"de\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\",\"name\":\"Dr.benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr.benjamin anderson\"},\"description\":\"Ik ben Benjamin, een gepensioneerde hoogleraar statistiek die nu een toegewijde Statorials-lesgever is. Ik heb uitgebreide ervaring en expertise op het gebied van statistiek en ik ben vastbesloten om mijn kennis te delen met studenten via Statorials. Lees verder\",\"sameAs\":[\"http:\/\/statorials.org\/nl\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Hoe str_replace in R te gebruiken (met voorbeelden) \u2013 Statorials","description":"In deze tutorial wordt uitgelegd hoe je de str_replace-functie in R gebruikt, met verschillende voorbeelden.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/nl\/str_replace-in-r\/","og_locale":"de_DE","og_type":"article","og_title":"Hoe str_replace in R te gebruiken (met voorbeelden) \u2013 Statorials","og_description":"In deze tutorial wordt uitgelegd hoe je de str_replace-functie in R gebruikt, met verschillende voorbeelden.","og_url":"https:\/\/statorials.org\/nl\/str_replace-in-r\/","og_site_name":"Statorials","article_published_time":"2023-07-26T11:55:18+00:00","author":"Dr.benjamin anderson","twitter_card":"summary_large_image","twitter_misc":{"Verfasst von":"Dr.benjamin anderson","Gesch\u00e4tzte Lesezeit":"2\u00a0Minuten"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/nl\/str_replace-in-r\/","url":"https:\/\/statorials.org\/nl\/str_replace-in-r\/","name":"Hoe str_replace in R te gebruiken (met voorbeelden) \u2013 Statorials","isPartOf":{"@id":"https:\/\/statorials.org\/nl\/#website"},"datePublished":"2023-07-26T11:55:18+00:00","dateModified":"2023-07-26T11:55:18+00:00","author":{"@id":"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219"},"description":"In deze tutorial wordt uitgelegd hoe je de str_replace-functie in R gebruikt, met verschillende voorbeelden.","breadcrumb":{"@id":"https:\/\/statorials.org\/nl\/str_replace-in-r\/#breadcrumb"},"inLanguage":"de","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/nl\/str_replace-in-r\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/nl\/str_replace-in-r\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Thuis","item":"https:\/\/statorials.org\/nl\/"},{"@type":"ListItem","position":2,"name":"Hoe str_replace in r te gebruiken (met voorbeelden)"}]},{"@type":"WebSite","@id":"https:\/\/statorials.org\/nl\/#website","url":"https:\/\/statorials.org\/nl\/","name":"Statorials","description":"Uw gids voor statistische competentie","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/statorials.org\/nl\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"de"},{"@type":"Person","@id":"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219","name":"Dr.benjamin anderson","image":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/statorials.org\/nl\/#\/schema\/person\/image\/","url":"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg","contentUrl":"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg","caption":"Dr.benjamin anderson"},"description":"Ik ben Benjamin, een gepensioneerde hoogleraar statistiek die nu een toegewijde Statorials-lesgever is. Ik heb uitgebreide ervaring en expertise op het gebied van statistiek en ik ben vastbesloten om mijn kennis te delen met studenten via Statorials. Lees verder","sameAs":["http:\/\/statorials.org\/nl"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/posts\/1413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/comments?post=1413"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/posts\/1413\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/media?parent=1413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/categories?post=1413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/nl\/wp-json\/wp\/v2\/tags?post=1413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}