{"id":2120,"date":"2023-07-23T14:51:36","date_gmt":"2023-07-23T14:51:36","guid":{"rendered":"https:\/\/statorials.org\/pt\/dplyr-de-mesa-cruzada\/"},"modified":"2023-07-23T14:51:36","modified_gmt":"2023-07-23T14:51:36","slug":"dplyr-de-mesa-cruzada","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/dplyr-de-mesa-cruzada\/","title":{"rendered":"Como criar uma crosstab usando dplyr (com exemplos)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a seguinte sintaxe b\u00e1sica para produzir uma tabela cruzada usando fun\u00e7\u00f5es dos pacotes <a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> e <a href=\"https:\/\/tidyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">Tidyr<\/a> em R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #000000;\">df %&gt;%<\/span>\n  <span style=\"color: #3366ff;\">group_by<\/span> (var1, v <span style=\"color: #000000;\">ar2) %&gt;%<\/span>\n  <span style=\"color: #3366ff;\">tally<\/span> () <span style=\"color: #000000;\">%&gt;%<\/span>\n  <span style=\"color: #3366ff;\">spread<\/span> (var1,n)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar essa sintaxe na pr\u00e1tica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 1: Criar uma tabela cruzada b\u00e1sica<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Suponha que temos o seguinte quadro de dados em R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('A', 'A', 'A', 'A', 'B', 'B', 'B', 'B'),\n                 position=c('G', 'G', 'F', 'C', 'G', 'F', 'F', 'C'),\n                 dots=c(7, 7, 8, 11, 13, 15, 19, 13))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team position points\n1 AG 7\n2 AG 7\n3AF 8\n4 AC 11\n5 BG 13\n6 BF 15\n7 BF 19\n8 BC 13\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Podemos usar a seguinte sintaxe para criar uma tabela cruzada para as vari\u00e1veis \u201cequipe\u201d e \u201cposi\u00e7\u00e3o\u201d:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #ff0000;\">library<\/span> (dplyr)\n<span style=\"color: #ff0000;\">library<\/span> (tidyr)\n\n<span style=\"color: #008080;\">#produce crosstab<\/span><\/strong><\/span>\n<span style=\"color: #000000;\"><strong>df %&gt;%<\/strong><\/span>\n<span style=\"color: #000000;\"><strong><span style=\"color: #3366ff;\">group_by<\/span> (team, position) %&gt;%<\/strong><\/span>\n<span style=\"color: #000000;\"><strong><span style=\"color: #3366ff;\">tally<\/span> () %&gt;%<\/strong><\/span>\n<span style=\"color: #000000;\"><strong><span style=\"color: #3366ff;\">spread<\/span> (team, n)\n\n# A tibble: 3 x 3\n  position AB\n1 C 1 1\n2 F 1 2\n3 G 2 1\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Veja como interpretar os valores da tabela cruzada:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Existe <strong>1<\/strong> jogador que ocupa a posi\u00e7\u00e3o \u201cC\u201d e pertence \u00e0 equipe \u201cA\u201d<\/span><\/li>\n<li> <span style=\"color: #000000;\">Existe <strong>1<\/strong> jogador que ocupa a posi\u00e7\u00e3o \u201cC\u201d e pertence \u00e0 equipe \u201cB\u201d<\/span><\/li>\n<li> <span style=\"color: #000000;\">Existe <strong>1<\/strong> jogador que ocupa a posi\u00e7\u00e3o \u201cF\u201d e pertence \u00e0 equipe \u201cA\u201d<\/span><\/li>\n<li> <span style=\"color: #000000;\">Existem <strong>2<\/strong> jogadores que ocupam a posi\u00e7\u00e3o \u201cF\u201d e pertencem \u00e0 equipa \u201cB\u201d<\/span><\/li>\n<li> <span style=\"color: #000000;\">Existem <strong>2<\/strong> jogadores que ocupam a posi\u00e7\u00e3o \u201cG\u201d e pertencem \u00e0 equipe \u201cA\u201d<\/span><\/li>\n<li> <span style=\"color: #000000;\">Existe <strong>1<\/strong> jogador que ocupa a posi\u00e7\u00e3o \u201cG\u201d e pertence \u00e0 equipe \u201cB\u201d<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Observe que podemos alterar as linhas e colunas da crosstab alterando a vari\u00e1vel usada na fun\u00e7\u00e3o <strong>spread()<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #ff0000;\">library<\/span> (dplyr)\n<span style=\"color: #ff0000;\">library<\/span> (tidyr)\n\n<span style=\"color: #008080;\">#produce crosstab with 'position' along columns<\/span><\/strong><\/span>\n<span style=\"color: #000000;\"><strong>df %&gt;%<\/strong><\/span>\n<span style=\"color: #000000;\"><strong><span style=\"color: #3366ff;\">group_by<\/span> (team, position) %&gt;%<\/strong><\/span>\n<span style=\"color: #000000;\"><strong><span style=\"color: #3366ff;\">tally<\/span> () %&gt;%<\/strong><\/span>\n<span style=\"color: #000000;\"><strong><span style=\"color: #3366ff;\">spread<\/span> (position, n)\n\n# A tibble: 2 x 4\n# Groups: team [2]\n  team CFG\n1 A 1 1 2\n2 B 1 2 1\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Relacionado:<\/strong><\/span> <a href=\"https:\/\/statorials.org\/pt\/funcao-de-espalhamento-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar o recurso Spread no Tidyr<\/a><\/p>\n<p> <strong style=\"color: #000000; font-family: Montserrat, sans-serif; font-size: 24px;\">Recursos adicionais<\/strong><\/p>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como executar outras fun\u00e7\u00f5es comuns no dplyr:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/frequencias-relativas-dplyr\/\" target=\"_blank\" rel=\"noopener\">Como calcular frequ\u00eancias relativas usando dplyr<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/dplyr-seleciona-colunas-por-indice\/\" target=\"_blank\" rel=\"noopener\">Como selecionar colunas por \u00edndice usando dplyr<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/dplyr-excluir-linhas\/\" target=\"_blank\" rel=\"noopener\">Como deletar linhas usando dplyr<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a seguinte sintaxe b\u00e1sica para produzir uma tabela cruzada usando fun\u00e7\u00f5es dos pacotes dplyr e Tidyr em R: df %&gt;% group_by (var1, v ar2) %&gt;% tally () %&gt;% spread (var1,n) Os exemplos a seguir mostram como usar essa sintaxe na pr\u00e1tica. Exemplo 1: Criar uma tabela cruzada b\u00e1sica Suponha que temos o [&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-2120","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 uma crosstab usando dplyr (com exemplos) - Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como criar uma crosstab em R usando dplyr, 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\/dplyr-de-mesa-cruzada\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como criar uma crosstab usando dplyr (com exemplos) - Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como criar uma crosstab em R usando dplyr, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/dplyr-de-mesa-cruzada\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-23T14:51:36+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=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/dplyr-de-mesa-cruzada\/\",\"url\":\"https:\/\/statorials.org\/pt\/dplyr-de-mesa-cruzada\/\",\"name\":\"Como criar uma crosstab usando dplyr (com exemplos) - Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-23T14:51:36+00:00\",\"dateModified\":\"2023-07-23T14:51:36+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como criar uma crosstab em R usando dplyr, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/dplyr-de-mesa-cruzada\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/dplyr-de-mesa-cruzada\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/dplyr-de-mesa-cruzada\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como criar uma crosstab usando dplyr (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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