{"id":4179,"date":"2023-07-13T01:50:52","date_gmt":"2023-07-13T01:50:52","guid":{"rendered":"https:\/\/statorials.org\/pt\/funcao-de-corte-em-r\/"},"modified":"2023-07-13T01:50:52","modified_gmt":"2023-07-13T01:50:52","slug":"funcao-de-corte-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/funcao-de-corte-em-r\/","title":{"rendered":"Como usar a fun\u00e7\u00e3o cut() em r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">A fun\u00e7\u00e3o <strong>cut()<\/strong> em R pode ser usada para cortar um intervalo de valores em compartimentos e especificar r\u00f3tulos para cada compartimento.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Esta fun\u00e7\u00e3o usa a seguinte sintaxe:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>cortar(x, quebras, r\u00f3tulos = NULL,\u2026)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>x<\/strong> : nome do vetor<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>breaks<\/strong> : N\u00famero de quebras a serem feitas ou vetor de pontos de quebra<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>r\u00f3tulos<\/strong> : r\u00f3tulos para as caixas resultantes<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar esta fun\u00e7\u00e3o em diferentes cen\u00e1rios com o seguinte quadro de dados em R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (player=c('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I'),\n                 points=c(4, 7, 8, 12, 14, 16, 20, 26, 36))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  player points\n1 to 4\n2 B 7\n3 C 8\n4 D 12\n5 E 14\n6 F 16\n7 G 20\n8:26 a.m.\n9 I 36<\/span><\/span><\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 1: Corte o vetor com base no n\u00famero de quebras<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>cut()<\/strong> para criar uma nova coluna chamada <strong>categoria<\/strong> que corta a coluna <strong>de pontos<\/strong> em grupos de quatro tamanhos iguais:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#create new column that places each player into four categories based on points\n<\/span>df$category &lt;- cut(df$points, breaks= <span style=\"color: #008000;\">4<\/span> )\n\n<span style=\"color: #008080;\">#view updated data frame\n<\/span>df\n\n  player points category\n1 to 4 (3.97.12]\n2 B 7 (3.97.12]\n3 C 8 (3.97.12]\n4 D 12 (3.97.12]\n5 E 14 (12.20]\n6 F 16 (12.20]\n7 G 20 (12.20]\n8:26 a.m. (20.28]\n9 I 36 (28.36]<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Como especificamos <strong>breaks=4<\/strong> , a fun\u00e7\u00e3o <strong>cut()<\/strong> divide os valores na coluna de pontos em grupos de quatro tamanhos iguais.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Veja como a fun\u00e7\u00e3o <strong>cut()<\/strong> fez isso:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Primeiro, ele encontrou a diferen\u00e7a entre o maior e o menor valor na coluna de pontos (36 \u2013 4 = 32).<\/span><\/li>\n<li> <span style=\"color: #000000;\">Ent\u00e3o ele divide essa diferen\u00e7a por 4 (32\/4 = 8)<\/span><\/li>\n<li> <span style=\"color: #000000;\">O resultado s\u00e3o quatro caixas com largura de 8 cada.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : O intervalo mais baixo \u00e9 3,97 em vez de 4 devido \u00e0 seguinte funcionalidade da <a href=\"https:\/\/www.rdocumentation.org\/packages\/base\/versions\/3.6.2\/topics\/cut\" target=\"_blank\" rel=\"noopener\">documenta\u00e7\u00e3o<\/a> <strong>cut()<\/strong> :<\/span><\/p>\n<blockquote>\n<p> <span style=\"color: #000000;\"><em>Quando as pausas s\u00e3o especificadas como um \u00fanico n\u00famero, o intervalo dos dados \u00e9 dividido em blocos de pausas de igual comprimento e, em seguida, os limites externos s\u00e3o movidos 0,1% para longe do intervalo para garantir que os valores discrepantes caiam dentro de ambos nos intervalos de pausa.<\/em><\/span><\/p>\n<\/blockquote>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 2: Vetor de corte com base em pontos de interrup\u00e7\u00e3o espec\u00edficos<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>cut()<\/strong> para criar uma nova coluna chamada <strong>categoria<\/strong> que corta a coluna <strong>de pontos<\/strong> com base em um vetor de pontos de interrup\u00e7\u00e3o espec\u00edficos:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#create new column based on specific break points\n<\/span>df$category &lt;- cut(df$points, breaks=c(0, 10, 15, 20, 40))\n\n<span style=\"color: #008080;\">#view updated data frame\n<\/span>df\n\n  player points category\n1 to 4 (0.10]\n2 B 7 (0.10]\n3 C 8 (0.10]\n4 D 12 (10.15]\n5 E 14 (10.15]\n6 F 16 (15.20]\n7 G 20 (15.20]\n8:26 a.m. (20.40)\n9 I 36 (20.40]<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">A fun\u00e7\u00e3o <strong>cut()<\/strong> classificou cada jogador em categorias com base no vetor espec\u00edfico de pontos de interrup\u00e7\u00e3o que fornecemos.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 3: Corte um vetor usando pontos de interrup\u00e7\u00e3o e r\u00f3tulos espec\u00edficos<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>cut()<\/strong> para criar uma nova coluna chamada <strong>categoria<\/strong> que corta a coluna <strong>de pontos<\/strong> com base em um vetor de pontos de interrup\u00e7\u00e3o espec\u00edficos com r\u00f3tulos personalizados:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#create new column based on values in points column\n<\/span>df$category &lt;- cut(df$points,\n                   breaks=c(0, 10, 15, 20, 40),\n                   labels=c(' <span style=\"color: #ff0000;\">Bad<\/span> ', ' <span style=\"color: #ff0000;\">OK<\/span> ', ' <span style=\"color: #ff0000;\">Good<\/span> ', ' <span style=\"color: #ff0000;\">Great<\/span> '))\n\n<span style=\"color: #008080;\">#view updated data frame\n<\/span>df\n\n  player points category\n1 A 4 Bad\n2 B 7 Bad\n3 C 8 Bad\n4 D 12 OK\n5 E 14 OK\n6 F 16 Good\n7 G 20 Good\n8:26 A.M. Great\n9 I 36 Great\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">A nova coluna <strong>de categoria<\/strong> classifica cada jogador como Ruim, OK, Bom ou Excelente com base no valor correspondente na coluna <strong>de pontos<\/strong> .<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : O n\u00famero de r\u00f3tulos deve ser sempre um a menos que o n\u00famero de pontos de interrup\u00e7\u00e3o para evitar o seguinte erro:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\">Error in cut.default(df$points, breaks = c(0, 10, 15, 20, 40), labels = c(\"Bad\",: \n  lengths of 'breaks' and 'labels' differ<\/span><\/span><\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como usar outras fun\u00e7\u00f5es comuns em R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/funcao-de-tabulacao-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar a fun\u00e7\u00e3o tabulate() em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/funcao-de-divisao-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar a fun\u00e7\u00e3o split() em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/funcao-de-correspondencia-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar a fun\u00e7\u00e3o match() em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/replicar-funcao-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar a fun\u00e7\u00e3o replicate() em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A fun\u00e7\u00e3o cut() em R pode ser usada para cortar um intervalo de valores em compartimentos e especificar r\u00f3tulos para cada compartimento. Esta fun\u00e7\u00e3o usa a seguinte sintaxe: cortar(x, quebras, r\u00f3tulos = NULL,\u2026) Ouro: x : nome do vetor breaks : N\u00famero de quebras a serem feitas ou vetor de pontos de quebra r\u00f3tulos : [&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-4179","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 usar a fun\u00e7\u00e3o cut() em R - Estatoriais<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o cut() em R, com v\u00e1rios exemplos.\" \/>\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\/funcao-de-corte-em-r\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como usar a fun\u00e7\u00e3o cut() em R - Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o cut() em R, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/funcao-de-corte-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-13T01:50:52+00:00\" \/>\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=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/funcao-de-corte-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/funcao-de-corte-em-r\/\",\"name\":\"Como usar a fun\u00e7\u00e3o cut() em R - Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-13T01:50:52+00:00\",\"dateModified\":\"2023-07-13T01:50:52+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar a fun\u00e7\u00e3o cut() em R, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/funcao-de-corte-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/funcao-de-corte-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/funcao-de-corte-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar a fun\u00e7\u00e3o cut() em r\"}]},{\"@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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