{"id":4258,"date":"2023-07-12T11:47:53","date_gmt":"2023-07-12T11:47:53","guid":{"rendered":"https:\/\/statorials.org\/pt\/r-elimine-todas-as-colunas-exceto\/"},"modified":"2023-07-12T11:47:53","modified_gmt":"2023-07-12T11:47:53","slug":"r-elimine-todas-as-colunas-exceto","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/r-elimine-todas-as-colunas-exceto\/","title":{"rendered":"R: como remover todas as colunas, exceto algumas espec\u00edficas"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar os seguintes m\u00e9todos para remover todas as colunas, exceto algumas, de um quadro de dados em R:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 1: Use Base R<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df &lt;- df[c(' <span style=\"color: #ff0000;\">col2<\/span> ', ' <span style=\"color: #ff0000;\">col6<\/span> ')]\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 2: use dplyr<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\ndf &lt;- df %&gt;% select(col2, col6)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Ambos os m\u00e9todos removem todas as colunas do quadro de dados, exceto as colunas chamadas <strong>col2<\/strong> e <strong>col6<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar cada m\u00e9todo na pr\u00e1tica com 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', 'B', 'C', 'D', 'E', 'F', 'G', 'H'),\n                 points=c(18, 22, 19, 14, 14, 11, 20, 28),\n                 assists=c(5, 7, 7, 9, 12, 9, 9, 4),\n                 rebounds=c(11, 8, 10, 6, 6, 5, 9, 12),\n                 steals=c(4, 3, 3, 2, 5, 4, 3, 8),\n                 blocks=c(1, 0, 0, 3, 2, 2, 1, 5))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team points assists rebounds steals blocks\n1 A 18 5 11 4 1\n2 B 22 7 8 3 0\n3 C 19 7 10 3 0\n4 D 14 9 6 2 3\n5 E 14 12 6 5 2\n6 F 11 9 5 4 2\n7 G 20 9 9 3 1\n8:28 4 12 8 5<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 1: Remova todas as colunas, exceto aquelas espec\u00edficas, usando Base R<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Podemos usar a seguinte sintaxe para remover todas as colunas do quadro de dados, exceto aquelas chamadas <strong>pontos<\/strong> e <strong>blocos<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#drop all columns except points and blocks\n<\/span>df &lt;- df[c(' <span style=\"color: #ff0000;\">points<\/span> ', ' <span style=\"color: #ff0000;\">blocks<\/span> ')]\n\n<span style=\"color: #008080;\">#view updated data frame\n<\/span>df\n\n  point blocks\n1 18 1\n2 22 0\n3 19 0\n4 14 3\n5 14 2\n6 11 2\n7 20 1\n8 28 5\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Observe que apenas as colunas <strong>de pontos<\/strong> e <strong>blocos<\/strong> permanecem.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Todas as outras colunas foram removidas.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 2: Remova todas as colunas, exceto algumas, usando dplyr<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Tamb\u00e9m podemos usar a fun\u00e7\u00e3o <strong>select()<\/strong> do pacote <a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> para remover todas as colunas do quadro de dados, exceto aquelas chamadas <strong>pontos<\/strong> e <strong>blocos<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#drop all columns except points and blocks<\/span>\ndf &lt;- df %&gt;% select(points, blocks)\n\n<span style=\"color: #008080;\">#view updated data frame<\/span>\ndf\n\n  point blocks\n1 18 1\n2 22 0\n3 19 0\n4 14 3\n5 14 2\n6 11 2\n7 20 1\n8 28 5\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Observe que apenas as colunas <strong>de pontos<\/strong> e <strong>blocos<\/strong> permanecem.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Isso corresponde aos resultados do exemplo anterior.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como realizar outras tarefas comuns em R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/r-nome-das-colunas-suspensas-contem\/\" target=\"_blank\" rel=\"noopener\">Como remover colunas se o nome contiver uma string espec\u00edfica em R<\/a><br \/><a href=\"https:\/\/statorials.org\/pt\/dplyr-elimina-multiplas-colunas\/\" target=\"_blank\" rel=\"noopener\">Como excluir v\u00e1rias colunas usando dplyr<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/remova-colunas-com-na-em-r\/\" target=\"_blank\" rel=\"noopener\">Como deletar colunas com valores NA em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar os seguintes m\u00e9todos para remover todas as colunas, exceto algumas, de um quadro de dados em R: M\u00e9todo 1: Use Base R df &lt;- df[c(&#8216; col2 &#8216;, &#8216; col6 &#8216;)] M\u00e9todo 2: use dplyr library (dplyr) df &lt;- df %&gt;% select(col2, col6) Ambos os m\u00e9todos removem todas as colunas do quadro de [&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-4258","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>A: Como remover todas as colunas, exceto algumas \u2013 Estatoriais<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como remover todas as colunas de um quadro de dados em R, exceto algumas espec\u00edficas com um exemplo.\" \/>\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\/r-elimine-todas-as-colunas-exceto\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A: Como remover todas as colunas, exceto algumas \u2013 Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como remover todas as colunas de um quadro de dados em R, exceto algumas espec\u00edficas com um exemplo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/r-elimine-todas-as-colunas-exceto\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-12T11:47:53+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\/r-elimine-todas-as-colunas-exceto\/\",\"url\":\"https:\/\/statorials.org\/pt\/r-elimine-todas-as-colunas-exceto\/\",\"name\":\"A: Como remover todas as colunas, exceto algumas \u2013 Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-12T11:47:53+00:00\",\"dateModified\":\"2023-07-12T11:47:53+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como remover todas as colunas de um quadro de dados em R, exceto algumas espec\u00edficas com um exemplo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/r-elimine-todas-as-colunas-exceto\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/r-elimine-todas-as-colunas-exceto\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/r-elimine-todas-as-colunas-exceto\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"R: como remover todas as colunas, exceto algumas espec\u00edficas\"}]},{\"@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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