{"id":1079,"date":"2023-07-27T17:53:44","date_gmt":"2023-07-27T17:53:44","guid":{"rendered":"https:\/\/statorials.org\/pt\/trocar-duas-colunas-em-r\/"},"modified":"2023-07-27T17:53:44","modified_gmt":"2023-07-27T17:53:44","slug":"trocar-duas-colunas-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/trocar-duas-colunas-em-r\/","title":{"rendered":"Como alterar duas colunas em r: com exemplos"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u00c0s vezes voc\u00ea pode querer alterar a posi\u00e7\u00e3o de duas colunas em um quadro de dados R. Felizmente, isso \u00e9 f\u00e1cil de fazer usando um dos dois trechos de c\u00f3digo a seguir:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Op\u00e7\u00e3o 1: use sintaxe de coluna.<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define order of data frame columns<\/span>\ndf &lt;- df[c(\"col1\", \"col2\", \"col3\", \"col4\")]\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Op\u00e7\u00e3o 2: use sintaxe de linha e coluna.<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define order of data frame columns<\/span>\ndf &lt;- df[, c(\"col1\", \"col2\", \"col3\", \"col4\")]<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir ilustram como usar esses dois bits de c\u00f3digo na pr\u00e1tica.<\/span><\/p>\n<h3> <strong><span style=\"color: #000000;\">Exemplo 1: Altere duas colunas usando sintaxe de coluna<\/span><\/strong><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como criar um quadro de dados com quatro colunas e depois inverter a posi\u00e7\u00e3o da primeira e da terceira colunas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(col1=c(1, 2, 6, 3, 6, 6),\n                 col2=c(4, 4, 5, 4, 3, 2),\n                 col3=c(7, 7, 8, 7, 3, 3),\n                 col4=c(9, 9, 9, 5, 5, 3))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  col1 col2 col3 col4\n1 1 4 7 9\n2 2 4 7 9\n3 6 5 8 9\n4 3 4 7 5\n5 6 3 3 5\n6 6 2 3 3\n\n<span style=\"color: #008080;\">#switch positions of first and third column\n<\/span>df &lt;- df[c(\"col3\", \"col2\", \"col1\", \"col4\")]\n\n<span style=\"color: #008080;\">#view new data frame\n<\/span>df\n\n  col3 col2 col1 col4\n1 7 4 1 9\n2 7 4 2 9\n3 8 5 6 9\n4 7 4 3 5\n5 3 3 6 5\n6 3 2 6 3\n<\/strong><\/pre>\n<h3> <strong><span style=\"color: #000000;\">Exemplo 2: alterar duas colunas usando sintaxe de linha e coluna<\/span><\/strong><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como criar um quadro de dados com quatro colunas e depois inverter a posi\u00e7\u00e3o da primeira e da terceira colunas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(col1=c(1, 2, 6, 3, 6, 6),\n                 col2=c(4, 4, 5, 4, 3, 2),\n                 col3=c(7, 7, 8, 7, 3, 3),\n                 col4=c(9, 9, 9, 5, 5, 3))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  col1 col2 col3 col4\n1 1 4 7 9\n2 2 4 7 9\n3 6 5 8 9\n4 3 4 7 5\n5 6 3 3 5\n6 6 2 3 3\n\n<span style=\"color: #008080;\">#switch positions of first and third column\n<\/span>df &lt;- df[, c(\"col3\", \"col2\", \"col1\", \"col4\")]\n\n<span style=\"color: #008080;\">#view new data frame\n<\/span>df\n\n  col3 col2 col1 col4\n1 7 4 1 9\n2 7 4 2 9\n3 8 5 6 9\n4 7 4 3 5\n5 3 3 6 5\n6 3 2 6 3<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que ambos os m\u00e9todos levam aos mesmos resultados.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pt\/adicione-colunas-especificas-em-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">Como somar colunas espec\u00edficas em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/media-entre-colunas-em-r\/\">Como calcular a m\u00e9dia das colunas em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c0s vezes voc\u00ea pode querer alterar a posi\u00e7\u00e3o de duas colunas em um quadro de dados R. Felizmente, isso \u00e9 f\u00e1cil de fazer usando um dos dois trechos de c\u00f3digo a seguir: Op\u00e7\u00e3o 1: use sintaxe de coluna. #define order of data frame columns df &lt;- df[c(&#8220;col1&#8221;, &#8220;col2&#8221;, &#8220;col3&#8221;, &#8220;col4&#8221;)] Op\u00e7\u00e3o 2: use sintaxe 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-1079","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 alterar duas colunas em R: com exemplos<\/title>\n<meta name=\"description\" content=\"Uma explica\u00e7\u00e3o simples de como alterar duas colunas em R, incluindo 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\/trocar-duas-colunas-em-r\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como alterar duas colunas em R: com exemplos\" \/>\n<meta property=\"og:description\" content=\"Uma explica\u00e7\u00e3o simples de como alterar duas colunas em R, incluindo v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/trocar-duas-colunas-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T17:53:44+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=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/trocar-duas-colunas-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/trocar-duas-colunas-em-r\/\",\"name\":\"Como alterar duas colunas em R: com exemplos\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-27T17:53:44+00:00\",\"dateModified\":\"2023-07-27T17:53:44+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Uma explica\u00e7\u00e3o simples de como alterar duas colunas em R, incluindo v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/trocar-duas-colunas-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/trocar-duas-colunas-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/trocar-duas-colunas-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como alterar duas colunas em r: 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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