{"id":3403,"date":"2023-07-17T16:39:28","date_gmt":"2023-07-17T16:39:28","guid":{"rendered":"https:\/\/statorials.org\/nl\/ggplotvolgorde-x-as\/"},"modified":"2023-07-17T16:39:28","modified_gmt":"2023-07-17T16:39:28","slug":"ggplotvolgorde-x-as","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/ggplotvolgorde-x-as\/","title":{"rendered":"Hoe items op de x-as te bestellen in ggplot2"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">U kunt de volgende basissyntaxis gebruiken om items op de x-as van een plot in ggplot2 te ordenen:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(df, aes(x=factor(x_var, level=c(' <span style=\"color: #ff0000;\">value1<\/span> ', ' <span style=\"color: #ff0000;\">value2<\/span> ', ' <span style=\"color: #ff0000;\">value3<\/span> ')), y=y_var)) +\n  geom_col()\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">De volgende voorbeelden laten zien hoe u deze syntaxis in de praktijk kunt gebruiken.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Voorbeeld: bestel items op de x-as in ggplot2<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Stel dat we het volgende gegevensframe in R hebben dat de punten weergeeft die door verschillende basketbalteams zijn gescoord:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<span style=\"color: #000000;\">df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('Mavs', 'Heat', 'Nets', 'Lakers'),\n                 dots=c(100, 122, 104, 109))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n    team points\n1 Mavs 100\n2 Heat 122\n3 Nets 104\n4 Lakers 109\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Als we een staafdiagram maken om de door elk team gescoorde punten te visualiseren, zal ggplot2 de staven automatisch alfabetisch sorteren:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">library<\/span> (ggplot2)\n\n<span style=\"color: #008080;\">#create bar plot\n<\/span>ggplot(df, aes(x=team, y=points)) +\n  geom_col()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-28536 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/commande1.jpg\" alt=\"\" width=\"488\" height=\"484\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Om een volgorde voor de staven op de x-as te specificeren, kunnen we het <strong>niveau-<\/strong> argument als volgt gebruiken:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">library<\/span> (ggplot2)\n\n<span style=\"color: #008080;\">#create bar plot with specific axis order\n<\/span>ggplot(df, aes(x=factor(team, level=c(' <span style=\"color: #ff0000;\">Mavs<\/span> ', ' <span style=\"color: #ff0000;\">Heat<\/span> ', ' <span style=\"color: #ff0000;\">Nets<\/span> ', ' <span style=\"color: #ff0000;\">Lakers<\/span> ')), y=points)) +\n  geom_col()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-28537 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/commande2.jpg\" alt=\"\" width=\"497\" height=\"515\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">De balken staan nu in de exacte volgorde die we hebben opgegeven in het <strong>niveau-<\/strong> argument.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Je kunt ook <strong>xlab()<\/strong> gebruiken om de x-as te hernoemen naar iets dat gemakkelijker te lezen is:<\/span><\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">library<\/span> (ggplot2)\n\n<span style=\"color: #008080;\">#create bar plot with specific axis order\n<\/span>ggplot(df, aes(x=factor(team, level=c(' <span style=\"color: #ff0000;\">Mavs<\/span> ', ' <span style=\"color: #ff0000;\">Heat<\/span> ', ' <span style=\"color: #ff0000;\">Nets<\/span> ', ' <span style=\"color: #ff0000;\">Lakers<\/span> ')), y=points)) +\n  geom_col() +\n  xlab(' <span style=\"color: #ff0000;\">Team<\/span> ')<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-28538 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/commande3.jpg\" alt=\"\" width=\"498\" height=\"499\" srcset=\"\" sizes=\"auto, \"><\/p>\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 ggplot2 kunt uitvoeren:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/nl\/roteer-aslabels-ggplot2\/\" target=\"_blank\" rel=\"noopener\">Hoe aslabels te roteren in ggplot2<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/ggplot-as-springt\/\" target=\"_blank\" rel=\"noopener\">Hoe aseinden in ggplot2 in te stellen<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/stel-ggplot2-aslimieten-in\/\" target=\"_blank\" rel=\"noopener\">Hoe aslimieten in ggplot2 in te stellen<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/ggplot-legendalabels\/\" target=\"_blank\" rel=\"noopener\">Hoe legendalabels in ggplot2 te veranderen<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>U kunt de volgende basissyntaxis gebruiken om items op de x-as van een plot in ggplot2 te ordenen: ggplot(df, aes(x=factor(x_var, level=c(&#8218; value1 &#8218;, &#8218; value2 &#8218;, &#8218; value3 &#8218;)), y=y_var)) + geom_col() De volgende voorbeelden laten zien hoe u deze syntaxis in de praktijk kunt gebruiken. Voorbeeld: bestel items op de x-as in ggplot2 Stel [&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-3403","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 items op de x-as te bestellen in ggplot2 \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"In deze tutorial wordt aan de hand van een voorbeeld uitgelegd hoe u items op de x-as in een plot in ggplot2 kunt sorteren.\" \/>\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\/ggplotvolgorde-x-as\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hoe items op de x-as te bestellen in ggplot2 \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"In deze tutorial wordt aan de hand van een voorbeeld uitgelegd hoe u items op de x-as in een plot in ggplot2 kunt sorteren.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/ggplotvolgorde-x-as\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-17T16:39:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/commande1.jpg\" \/>\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\/ggplotvolgorde-x-as\/\",\"url\":\"https:\/\/statorials.org\/nl\/ggplotvolgorde-x-as\/\",\"name\":\"Hoe items op de x-as te bestellen in ggplot2 \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-17T16:39:28+00:00\",\"dateModified\":\"2023-07-17T16:39:28+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze tutorial wordt aan de hand van een voorbeeld uitgelegd hoe u items op de x-as in een plot in ggplot2 kunt sorteren.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/ggplotvolgorde-x-as\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/ggplotvolgorde-x-as\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/ggplotvolgorde-x-as\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hoe items op de x-as te bestellen in ggplot2\"}]},{\"@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. 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