{"id":1099,"date":"2023-07-27T16:18:45","date_gmt":"2023-07-27T16:18:45","guid":{"rendered":"https:\/\/statorials.org\/nl\/verander-de-titel-van-de-legenda-ggplot2\/"},"modified":"2023-07-27T16:18:45","modified_gmt":"2023-07-27T16:18:45","slug":"verander-de-titel-van-de-legenda-ggplot2","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/verander-de-titel-van-de-legenda-ggplot2\/","title":{"rendered":"Hoe de legendatitel in ggplot2 te veranderen (met voorbeelden)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Er zijn twee eenvoudige manieren om de legendatitel in een ggplot2-diagram te wijzigen:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Methode 1: Gebruik labs()<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(data, aes(x=x_var, y=y_var, fill=fill_var)) + \n  geom_boxplot() + \n  labs(fill=' <span style=\"color: #008000;\">Legend Title<\/span> ')\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Methode 2: Gebruik scale_fill_manual()<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(data, aes(x=x_var, y=y_var, fill=fill_var)) + \n  geom_boxplot() +\n  scale_fill_manual(' <span style=\"color: #008000;\">Legend Title<\/span> ', values=c(' <span style=\"color: #008000;\">color1<\/span> ', ' <span style=\"color: #008000;\">color2<\/span> '))\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Deze tutorial toont voorbeelden van hoe u beide methoden in de praktijk kunt gebruiken.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Methode 1: Wijzig de titel van het bijschrift met labs()<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u een <a href=\"https:\/\/statorials.org\/nl\/gegroepeerde-boxplot-r-ggplot2\/\" target=\"_blank\" rel=\"noopener noreferrer\">gegroepeerde boxplot<\/a> voor een bepaalde gegevensset maakt:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (ggplot2) \n\n<span style=\"color: #008080;\">#create dataset\n<\/span>data &lt;- data.frame(team= <span style=\"color: #3366ff;\">rep<\/span> (c('A', 'B', 'C'), <span style=\"color: #3366ff;\">each<\/span> =50),\n                   program= <span style=\"color: #3366ff;\">rep<\/span> (c('low', 'high'), <span style=\"color: #3366ff;\">each<\/span> =25),\n                   values= <span style=\"color: #3366ff;\">seq<\/span> (1:150)+ <span style=\"color: #3366ff;\">sample<\/span> (1:100, 150, replace= <span style=\"color: #008000;\">TRUE<\/span> ))\n\n<span style=\"color: #008080;\">#create boxplot<\/span>\nggplot(data, aes(x=team, y=values, fill=program)) + \n  geom_boxplot()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11206 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legendetitleggplot1.png\" alt=\"\" width=\"456\" height=\"456\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Standaard gebruikt ggplot2 de variabelenaam in de gegevensset als de legendatitel. We kunnen echter de functie <strong>labs()<\/strong> gebruiken om deze eenvoudig te wijzigen:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (ggplot2) \n\n<span style=\"color: #008080;\">#create dataset\n<\/span>data &lt;- data.frame(team= <span style=\"color: #3366ff;\">rep<\/span> (c('A', 'B', 'C'), <span style=\"color: #3366ff;\">each<\/span> =50),\n                   program= <span style=\"color: #3366ff;\">rep<\/span> (c('low', 'high'), <span style=\"color: #3366ff;\">each<\/span> =25),\n                   values= <span style=\"color: #3366ff;\">seq<\/span> (1:150)+ <span style=\"color: #3366ff;\">sample<\/span> (1:100, 150, replace= <span style=\"color: #008000;\">TRUE<\/span> ))\n\n<span style=\"color: #008080;\">#create boxplot<\/span>\nggplot(data, aes(x=team, y=values, fill=program)) + \n  geom_boxplot() + \n  labs(fill=' <span style=\"color: #008000;\">Program Type<\/span> ')<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11207 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legendetitleggplot2.png\" alt=\"Wijzig de titel van de legenda in ggplot2\" width=\"459\" height=\"472\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">We kunnen ook een regeleinde toevoegen aan de titel van het bijschrift door <strong>\\<\/strong> nte plaatsen waar we willen dat de nieuwe regel begint:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (ggplot2) \n\n<span style=\"color: #008080;\">#create dataset\n<\/span>data &lt;- data.frame(team= <span style=\"color: #3366ff;\">rep<\/span> (c('A', 'B', 'C'), <span style=\"color: #3366ff;\">each<\/span> =50),\n                   program= <span style=\"color: #3366ff;\">rep<\/span> (c('low', 'high'), <span style=\"color: #3366ff;\">each<\/span> =25),\n                   values= <span style=\"color: #3366ff;\">seq<\/span> (1:150)+ <span style=\"color: #3366ff;\">sample<\/span> (1:100, 150, replace= <span style=\"color: #008000;\">TRUE<\/span> ))\n\n<span style=\"color: #008080;\">#create boxplot<\/span>\nggplot(data, aes(x=team, y=values, fill=program)) + \n  geom_boxplot() + \n  labs(fill=' <span style=\"color: #008000;\">Program\\nType<\/span> ')<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11208 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legendetitleggplot3.png\" alt=\"Wijzig de titel van de legenda en voeg een regeleinde toe in ggplot2\" width=\"468\" height=\"467\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Methode 2: Wijzig de titel van de legenda met scale_fill_manual()<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen ook de functie <strong>scale_fill_manual()<\/strong> gebruiken om tegelijkertijd een titel van het bijschrift en een vector met kleurwaarden op te geven:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (ggplot2) \n\n<span style=\"color: #008080;\">#create dataset\n<\/span>data &lt;- data.frame(team= <span style=\"color: #3366ff;\">rep<\/span> (c('A', 'B', 'C'), <span style=\"color: #3366ff;\">each<\/span> =50),\n                   program= <span style=\"color: #3366ff;\">rep<\/span> (c('low', 'high'), <span style=\"color: #3366ff;\">each<\/span> =25),\n                   values= <span style=\"color: #3366ff;\">seq<\/span> (1:150)+ <span style=\"color: #3366ff;\">sample<\/span> (1:100, 150, replace= <span style=\"color: #008000;\">TRUE<\/span> ))\n\n<span style=\"color: #008080;\">#create boxplot<\/span>\nggplot(data, aes(x=team, y=values, fill=program)) + \n  geom_boxplot() + \n  scale_fill_manual(' <span style=\"color: #008000;\">Program Type<\/span> ', values=c(' <span style=\"color: #008000;\">pink<\/span> ',' <span style=\"color: #008000;\">blue<\/span> '))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11209 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legendetitleggplot4.png\" alt=\"Wijzig de titel van de legenda in ggplot2 met behulp van scale_fill_manual\" width=\"494\" height=\"493\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Houd er rekening mee dat kleurwaarden namen of hexadecimale kleurcodes kunnen zijn.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Aanvullende bronnen<\/strong><\/span><\/h3>\n<p><a href=\"https:\/\/statorials.org\/nl\/beste-ggplot2-themas\/\" target=\"_blank\" rel=\"noopener noreferrer\">Een complete gids voor de beste ggplot2-thema&#8217;s<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/ggplot2-titel\/\" target=\"_blank\" rel=\"noopener noreferrer\">De complete gids voor ggplot2-titels<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/naast-elkaar-gelegen-plots-ggplot2\/\" target=\"_blank\" rel=\"noopener noreferrer\">Hoe zij-aan-zij-plots te maken in ggplot2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Er zijn twee eenvoudige manieren om de legendatitel in een ggplot2-diagram te wijzigen: Methode 1: Gebruik labs() ggplot(data, aes(x=x_var, y=y_var, fill=fill_var)) + geom_boxplot() + labs(fill=&#8216; Legend Title &#8218;) Methode 2: Gebruik scale_fill_manual() ggplot(data, aes(x=x_var, y=y_var, fill=fill_var)) + geom_boxplot() + scale_fill_manual(&#8218; Legend Title &#8218;, values=c(&#8218; color1 &#8218;, &#8218; color2 &#8218;)) Deze tutorial toont voorbeelden van hoe [&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-1099","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 de legendatitel in ggplot2 te veranderen (met voorbeelden)<\/title>\n<meta name=\"description\" content=\"In deze tutorial wordt uitgelegd hoe u de legendatitel in ggplot2 kunt wijzigen, 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\/verander-de-titel-van-de-legenda-ggplot2\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hoe de legendatitel in ggplot2 te veranderen (met voorbeelden)\" \/>\n<meta property=\"og:description\" content=\"In deze tutorial wordt uitgelegd hoe u de legendatitel in ggplot2 kunt wijzigen, met verschillende voorbeelden.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/verander-de-titel-van-de-legenda-ggplot2\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T16:18:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legendetitleggplot1.png\" \/>\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\/verander-de-titel-van-de-legenda-ggplot2\/\",\"url\":\"https:\/\/statorials.org\/nl\/verander-de-titel-van-de-legenda-ggplot2\/\",\"name\":\"Hoe de legendatitel in ggplot2 te veranderen (met voorbeelden)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-27T16:18:45+00:00\",\"dateModified\":\"2023-07-27T16:18:45+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze tutorial wordt uitgelegd hoe u de legendatitel in ggplot2 kunt wijzigen, met verschillende voorbeelden.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/verander-de-titel-van-de-legenda-ggplot2\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/verander-de-titel-van-de-legenda-ggplot2\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/verander-de-titel-van-de-legenda-ggplot2\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hoe de legendatitel in ggplot2 te veranderen (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. 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