{"id":1110,"date":"2023-07-27T15:25:09","date_gmt":"2023-07-27T15:25:09","guid":{"rendered":"https:\/\/statorials.org\/it\/dimensione-della-legenda-ggplot2\/"},"modified":"2023-07-27T15:25:09","modified_gmt":"2023-07-27T15:25:09","slug":"dimensione-della-legenda-ggplot2","status":"publish","type":"post","link":"https:\/\/statorials.org\/it\/dimensione-della-legenda-ggplot2\/","title":{"rendered":"Come modificare la dimensione della legenda in ggplot2 (con esempi)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Puoi utilizzare la seguente sintassi per modificare la dimensione degli elementi in una legenda ggplot2:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(data, <span style=\"color: #3366ff;\">aes<\/span> (x=x, y=y)) +\n  theme( <span style=\"color: #993300;\">legend.key.size<\/span> = unit(1, ' <span style=\"color: #008000;\">cm<\/span> '), <span style=\"color: #008080;\">#change legend key size<\/span>\n<span style=\"color: #993300;\">legend.key.height<\/span> = unit(1, ' <span style=\"color: #008000;\">cm<\/span> '), <span style=\"color: #008080;\">#change legend key height<\/span>\n        <span style=\"color: #993300;\">legend.key.width<\/span> = unit(1, ' <span style=\"color: #008000;\">cm<\/span> '), <span style=\"color: #008080;\">#change legend key width<\/span>\n<span style=\"color: #993300;\">legend.title<\/span> = element_text(size=14), <span style=\"color: #008080;\">#change legend title font size<\/span>\n        <span style=\"color: #993300;\">legend.text<\/span> = element_text(size=10)) <span style=\"color: #008080;\">#change legend text font size<\/span>\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Gli esempi seguenti mostrano come utilizzare questi argomenti nella pratica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Modifica la dimensione della chiave della legenda ggplot2<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Supponiamo di creare il seguente <a href=\"https:\/\/statorials.org\/it\/gruppo-barplot-in-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">barplot raggruppato<\/a> utilizzando ggplot2:<\/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 data frame\n<\/span>df &lt;- data.frame(team=rep(c(' <span style=\"color: #008000;\">A<\/span> ', ' <span style=\"color: #008000;\">B<\/span> ', ' <span style=\"color: #008000;\">C<\/span> '), <span style=\"color: #3366ff;\">each<\/span> =3),\n                 position=rep(c(' <span style=\"color: #008000;\">Guard<\/span> ', ' <span style=\"color: #008000;\">Forward<\/span> ', ' <span style=\"color: #008000;\">Center<\/span> '), <span style=\"color: #3366ff;\">times<\/span> =3),\n                 dots=c(14, 8, 8, 16, 3, 7, 17, 22, 26))\n\n<span style=\"color: #008080;\">#create grouped barplot<\/span>\nggplot(df, <span style=\"color: #3366ff;\">aes<\/span> (fill=position, y=points, x=team)) +\n  geom_bar(position=' <span style=\"color: #008000;\">dodge<\/span> ', stat=' <span style=\"color: #008000;\">identity<\/span> ')<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11279 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legender1.png\" alt=\"\" width=\"503\" height=\"392\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Per impostazione predefinita, ggplot2 fornisce una legenda a destra del grafico.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Il codice seguente mostra come utilizzare l&#8217;argomento <strong>legend.key.size<\/strong> per ingrandire le chiavi della legenda:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(df, <span style=\"color: #3366ff;\">aes<\/span> (fill=position, y=points, x=team)) +\n  geom_bar(position=' <span style=\"color: #008000;\">dodge<\/span> ', stat=' <span style=\"color: #008000;\">identity<\/span> ') +\n  theme( <span style=\"color: #993300;\">legend.key.size<\/span> = unit(2, ' <span style=\"color: #008000;\">cm<\/span> '))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11280 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legender2.png\" alt=\"Cambia la dimensione della legenda in ggplot2\" width=\"533\" height=\"419\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">Possiamo anche utilizzare gli argomenti <strong>legend.key.width<\/strong> e <strong>legend.key.height<\/strong> per specificare larghezze e altezze delle chiavi:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(df, <span style=\"color: #3366ff;\">aes<\/span> (fill=position, y=points, x=team)) +\n  geom_bar(position=' <span style=\"color: #008000;\">dodge<\/span> ', stat=' <span style=\"color: #008000;\">identity<\/span> ') +\n  theme( <span style=\"color: #993300;\">legend.key.height<\/span> = unit(2, ' <span style=\"color: #008000;\">cm<\/span> '),\n        <span style=\"color: #993300;\">legend.key.width<\/span> = unit(4, ' <span style=\"color: #008000;\">cm<\/span> '))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11281 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legender3.png\" alt=\"Cambia la dimensione della chiave della legenda in ggplot2\" width=\"551\" height=\"434\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Cambia la dimensione del carattere del titolo della legenda ggplot2<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Possiamo usare <strong>l&#8217;<\/strong><\/span> <span style=\"color: #000000;\">argomento legend.title per ingrandire la dimensione del carattere del titolo della legenda:<\/span><\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(df, <span style=\"color: #3366ff;\">aes<\/span> (fill=position, y=points, x=team)) +\n  geom_bar(position=' <span style=\"color: #008000;\">dodge<\/span> ', stat=' <span style=\"color: #008000;\">identity<\/span> ') +\n  theme( <span style=\"color: #993300;\">legend.title<\/span> = element_text(size=30))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11282 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legender4.png\" alt=\"Cambia la dimensione del carattere del titolo della legenda ggplot2\" width=\"492\" height=\"387\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Cambia la dimensione del carattere del testo della legenda ggplot2<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Possiamo usare l&#8217;argomento <strong>legend.text<\/strong> per ingrandire la dimensione del carattere del titolo della legenda:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(df, <span style=\"color: #3366ff;\">aes<\/span> (fill=position, y=points, x=team)) +\n  geom_bar(position=' <span style=\"color: #008000;\">dodge<\/span> ', stat=' <span style=\"color: #008000;\">identity<\/span> ') +\n  theme( <span style=\"color: #993300;\">legend.text<\/span> = element_text(size=30))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11283 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legender5.png\" alt=\"Cambia la dimensione del testo della legenda in ggplot2\" width=\"532\" height=\"420\" srcset=\"\" sizes=\"\"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Risorse addizionali<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/it\/cambia-il-titolo-della-legenda-ggplot2\/\" target=\"_blank\" rel=\"noopener\">Come cambiare il titolo della legenda in ggplot2<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/posizione-della-legenda-ggplot\/\" target=\"_blank\" rel=\"noopener\">Come cambiare la posizione della legenda in ggplot2<\/a><br \/> <a href=\"https:\/\/statorials.org\/it\/rimuovi-la-legenda-ggplot2\/\" target=\"_blank\" rel=\"noopener\">Come rimuovere una legenda in ggplot2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Puoi utilizzare la seguente sintassi per modificare la dimensione degli elementi in una legenda ggplot2: ggplot(data, aes (x=x, y=y)) + theme( legend.key.size = unit(1, &#8216; cm &#8216;), #change legend key size legend.key.height = unit(1, &#8216; cm &#8216;), #change legend key height legend.key.width = unit(1, &#8216; cm &#8216;), #change legend key width legend.title = element_text(size=14), #change [&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":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Come modificare la dimensione della legenda in ggplot2 (con esempi)<\/title>\n<meta name=\"description\" content=\"Questo tutorial spiega come modificare la dimensione della legenda in ggplot2, con diversi esempi.\" \/>\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\/it\/dimensione-della-legenda-ggplot2\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Come modificare la dimensione della legenda in ggplot2 (con esempi)\" \/>\n<meta property=\"og:description\" content=\"Questo tutorial spiega come modificare la dimensione della legenda in ggplot2, con diversi esempi.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/it\/dimensione-della-legenda-ggplot2\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T15:25:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/legender1.png\" \/>\n<meta name=\"author\" content=\"Benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/it\/dimensione-della-legenda-ggplot2\/\",\"url\":\"https:\/\/statorials.org\/it\/dimensione-della-legenda-ggplot2\/\",\"name\":\"Come modificare la dimensione della legenda in ggplot2 (con esempi)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/it\/#website\"},\"datePublished\":\"2023-07-27T15:25:09+00:00\",\"dateModified\":\"2023-07-27T15:25:09+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\"},\"description\":\"Questo tutorial spiega come modificare la dimensione della legenda in ggplot2, con diversi esempi.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/it\/dimensione-della-legenda-ggplot2\/#breadcrumb\"},\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/it\/dimensione-della-legenda-ggplot2\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/it\/dimensione-della-legenda-ggplot2\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Casa\",\"item\":\"https:\/\/statorials.org\/it\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Come modificare la dimensione della legenda in ggplot2 (con esempi)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/it\/#website\",\"url\":\"https:\/\/statorials.org\/it\/\",\"name\":\"Statorials\",\"description\":\"La tua guida all&#039;alfabetizzazione statistica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/it\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"it-IT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/0896f191fb9fb019f2cd8623112cb3ae\",\"name\":\"Benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\/\/statorials.org\/it\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/it\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/it\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin anderson\"},\"description\":\"Ciao, sono Benjamin, un professore di statistica in pensione diventato insegnante dedicato di Statorials. 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