{"id":1090,"date":"2023-07-27T17:00:11","date_gmt":"2023-07-27T17:00:11","guid":{"rendered":"https:\/\/statorials.org\/pt\/grafico-de-pizza-ggplot\/"},"modified":"2023-07-27T17:00:11","modified_gmt":"2023-07-27T17:00:11","slug":"grafico-de-pizza-ggplot","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/grafico-de-pizza-ggplot\/","title":{"rendered":"Como criar gr\u00e1ficos de pizza no ggplot2 (com exemplos)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Um <strong>gr\u00e1fico de pizza<\/strong> \u00e9 um tipo de gr\u00e1fico em forma de c\u00edrculo e usa fatias para representar as propor\u00e7\u00f5es de um todo.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Este tutorial explica como criar e editar gr\u00e1ficos de pizza em R usando a biblioteca de visualiza\u00e7\u00e3o de dados <a href=\"https:\/\/ggplot2.tidyverse.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">ggplot2<\/a> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Como criar um gr\u00e1fico de pizza b\u00e1sico<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como criar um gr\u00e1fico de pizza b\u00e1sico para um conjunto de dados usando 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>data &lt;- data.frame(\" <span style=\"color: #008000;\">category<\/span> \" = c('A', 'B', 'C', 'D'),\n                   \" <span style=\"color: #008000;\">amount<\/span> \" = c(25, 40, 27, 8))\n\n<span style=\"color: #008080;\">#create pie chart<\/span>\nggplot(data, <span style=\"color: #3366ff;\">aes<\/span> (x=\"\", y=amount, fill=category)) +\n  geom_bar(stat=\" <span style=\"color: #008000;\">identity<\/span> \", width= <span style=\"color: #800080;\">1<\/span> ) +\n  coord_polar(\" <span style=\"color: #008000;\">y<\/span> \", start= <span style=\"color: #800080;\">0<\/span> ) \n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11154 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/tarteggplot2.png\" alt=\"gr\u00e1fico de pizza ggplot2\" width=\"446\" height=\"384\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Como alterar a apar\u00eancia do gr\u00e1fico de pizza<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O gr\u00e1fico de pizza padr\u00e3o no ggplot2 \u00e9 muito feio. A maneira mais f\u00e1cil de melhorar a apar\u00eancia \u00e9 usar <strong>theme_void()<\/strong> , que remove o plano de fundo, a grade e os r\u00f3tulos:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(data, <span style=\"color: #3366ff;\">aes<\/span> (x=\"\", y=amount, fill=category)) +\n  geom_bar(stat=\" <span style=\"color: #008000;\">identity<\/span> \", width= <span style=\"color: #800080;\">1<\/span> ) +\n  coord_polar(\" <span style=\"color: #008000;\">y<\/span> \", start= <span style=\"color: #800080;\">0<\/span> ) +\n  theme_void()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11155 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/tarteggplot3.png\" alt=\"gr\u00e1fico de pizza ggplot2 sem r\u00f3tulos\" width=\"457\" height=\"364\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Podemos melhorar ainda mais a apar\u00eancia do gr\u00e1fico adicionando r\u00f3tulos dentro das fatias:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(data, <span style=\"color: #3366ff;\">aes<\/span> (x=\"\", y=amount, fill=category)) +\n  geom_bar(stat=\" <span style=\"color: #008000;\">identity<\/span> \", width= <span style=\"color: #800080;\">1<\/span> ) +\n  coord_polar(\" <span style=\"color: #008000;\">y<\/span> \", start= <span style=\"color: #800080;\">0<\/span> ) +\n  geom_text( <span style=\"color: #3366ff;\">aes<\/span> (label = paste0(amount, \" <span style=\"color: #008000;\">%<\/span> \")), position = position_stack(vjust= <span style=\"color: #800080;\">0.5<\/span> )) +\n  labs(x = NULL, y = NULL, fill = NULL)<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11156 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/tarteggplot4.png\" alt=\"Gr\u00e1fico de pizza no ggplot2 com r\u00f3tulos personalizados\" width=\"487\" height=\"441\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Podemos personalizar ainda mais o gr\u00e1fico especificando nossas pr\u00f3prias cores hexadecimais para usar nas fatias com o argumento <strong>scale_fill_manual()<\/strong> :<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(data, <span style=\"color: #3366ff;\">aes<\/span> (x=\"\", y=amount, fill=category)) +\n  geom_bar(stat=\" <span style=\"color: #008000;\">identity<\/span> \", width= <span style=\"color: #800080;\">1<\/span> ) +\n  coord_polar(\" <span style=\"color: #008000;\">y<\/span> \", start= <span style=\"color: #800080;\">0<\/span> ) +\n  geom_text( <span style=\"color: #3366ff;\">aes<\/span> (label = paste0(amount, \" <span style=\"color: #008000;\">%<\/span> \")), position = position_stack(vjust= <span style=\"color: #800080;\">0.5<\/span> )) +\n  labs(x = NULL, y = NULL, fill = NULL) +\n  theme_classic() +\n  theme(axis.line = element_blank(),\n          axis.text = element_blank(),\n          axis.ticks = element_blank()) +\n  scale_fill_manual(values=c(\" <span style=\"color: #008000;\">#FF5733<\/span> \", \" <span style=\"color: #008000;\">#75FF33<\/span> \", \" <span style=\"color: #008000;\">#33DBFF<\/span> \", \" <span style=\"color: #008000;\">#BD33FF<\/span> \"))<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11157 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/tarteggplot5.png\" alt=\"Gr\u00e1fico de pizza ggplot2 preenchido manualmente em escala\" width=\"456\" height=\"361\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><em><strong>Dica:<\/strong> Use este <a href=\"https:\/\/htmlcolorcodes.com\/color-picker\/\" target=\"_blank\" rel=\"noopener noreferrer\">seletor de cores hexadecimais<\/a> para encontrar combina\u00e7\u00f5es de c\u00f3digos de cores hexadecimais que combinem bem.<\/em><\/span><\/p>\n<p> <span style=\"color: #000000;\">Voc\u00ea tamb\u00e9m pode personalizar as cores das fatias simplesmente escolhendo uma das <a href=\"https:\/\/ggplot2.tidyverse.org\/reference\/scale_brewer.html\" target=\"_blank\" rel=\"noopener noreferrer\">escalas de cores da cervejaria<\/a> . Por exemplo, esta \u00e9 a apar\u00eancia da escala de cores \u201cblues\u201d:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>ggplot(data, <span style=\"color: #3366ff;\">aes<\/span> (x=\"\", y=amount, fill=category)) +\n  geom_bar(stat=\" <span style=\"color: #008000;\">identity<\/span> \", width= <span style=\"color: #800080;\">1<\/span> ) +\n  coord_polar(\" <span style=\"color: #008000;\">y<\/span> \", start= <span style=\"color: #800080;\">0<\/span> ) +\n  geom_text( <span style=\"color: #3366ff;\">aes<\/span> (label = paste0(amount, \" <span style=\"color: #008000;\">%<\/span> \")), position = position_stack(vjust= <span style=\"color: #800080;\">0.5<\/span> )) +\n  labs(x = NULL, y = NULL) +\n  theme_classic() +\n  theme(axis.line = element_blank(),\n          axis.text = element_blank(),\n          axis.ticks = element_blank()) +\n  scale_fill_brewer(palette=\" <span style=\"color: #008000;\">Blues<\/span> \")<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11158 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/tarteggplot6.png\" alt=\"Brewer em escala no ggplot2\" width=\"484\" height=\"376\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/boxplot-agrupado-r-ggplot2\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como criar um boxplot agrupado em R usando ggplot2<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/mapa-de-calor-r-ggplot2\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como criar um mapa de calor em R usando ggplot2<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/grafico-de-gantt-r-ggplot2\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como criar um gr\u00e1fico de Gantt em R usando ggplot2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um gr\u00e1fico de pizza \u00e9 um tipo de gr\u00e1fico em forma de c\u00edrculo e usa fatias para representar as propor\u00e7\u00f5es de um todo. Este tutorial explica como criar e editar gr\u00e1ficos de pizza em R usando a biblioteca de visualiza\u00e7\u00e3o de dados ggplot2 . Como criar um gr\u00e1fico de pizza b\u00e1sico O c\u00f3digo a seguir [&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-1090","post","type-post","status-publish","format-standard","hentry","category-guia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Como criar gr\u00e1ficos de pizza no ggplot2 (com exemplos)<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como criar e editar gr\u00e1ficos de pizza em R usando a biblioteca ggplot2.\" \/>\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\/pt\/grafico-de-pizza-ggplot\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como criar gr\u00e1ficos de pizza no ggplot2 (com exemplos)\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como criar e editar gr\u00e1ficos de pizza em R usando a biblioteca ggplot2.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/grafico-de-pizza-ggplot\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T17:00:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/tarteggplot2.png\" \/>\n<meta name=\"author\" content=\"Dr. benjamim anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr. benjamim anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/grafico-de-pizza-ggplot\/\",\"url\":\"https:\/\/statorials.org\/pt\/grafico-de-pizza-ggplot\/\",\"name\":\"Como criar gr\u00e1ficos de pizza no ggplot2 (com exemplos)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-27T17:00:11+00:00\",\"dateModified\":\"2023-07-27T17:00:11+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como criar e editar gr\u00e1ficos de pizza em R usando a biblioteca ggplot2.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/grafico-de-pizza-ggplot\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/grafico-de-pizza-ggplot\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/grafico-de-pizza-ggplot\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como criar gr\u00e1ficos de pizza no ggplot2 (com exemplos)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pt\/#website\",\"url\":\"https:\/\/statorials.org\/pt\/\",\"name\":\"Statorials\",\"description\":\"O seu guia para a literacia estat\u00edstica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pt\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\",\"name\":\"Dr. benjamim anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr. benjamim anderson\"},\"description\":\"Ol\u00e1, sou Benjamin, um professor aposentado de estat\u00edstica que se tornou professor dedicado na Statorials. 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