{"id":4280,"date":"2023-07-12T07:54:28","date_gmt":"2023-07-12T07:54:28","guid":{"rendered":"https:\/\/statorials.org\/pt\/rodada-dplyr\/"},"modified":"2023-07-12T07:54:28","modified_gmt":"2023-07-12T07:54:28","slug":"rodada-dplyr","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/rodada-dplyr\/","title":{"rendered":"Como arredondar valores em colunas espec\u00edficas usando dplyr"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar os seguintes m\u00e9todos para arredondar valores em colunas espec\u00edficas de um quadro de dados usando o pacote <strong>dplyr<\/strong> em R:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 1: arredondar valores em colunas espec\u00edficas<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#round values in 'sales' and 'returns' columns to 2 decimal places \n<\/span>df_new &lt;- df %&gt;% mutate(across(c(' <span style=\"color: #ff0000;\">sales<\/span> ', ' <span style=\"color: #ff0000;\">returns<\/span> '), round, <span style=\"color: #008000;\">2<\/span> ))\n<\/strong><\/pre>\n<p> <strong><span style=\"color: #000000;\">M\u00e9todo 2: Arredonde os valores em todas as colunas num\u00e9ricas<\/span><\/strong><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#round values in all numeric columns to 2 decimal places\n<\/span>df_new &lt;- df %&gt;% mutate(across(where(is. <span style=\"color: #3366ff;\">numeric<\/span> ), round, <span style=\"color: #008000;\">2<\/span> ))<\/strong><\/pre>\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> (store=c('A', 'A', 'A', 'B', 'B', 'C', 'C', 'C'),\n                 sales=c(4.352, 6.5543, 7.5423, 9.22111, 4.332, 9.55, 8.0094, 7.2),\n                 returns=c(1.2324, 2.6654, 3.442, 6.545, 8.11, 8.004, 7.545, 6.0),\n                 promos=c(12.11, 14.455, 10.277, 23.51, 20.099, 29.343, 30.1, 45.6))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  store sales returns promos\n1 A 4.35200 1.2324 12.110\n2 A 6.55430 2.6654 14.455\n3 A 7.54230 3.4420 10.277\n4 B 9.22111 6.5450 23.510\n5 B 4.33200 8.1100 20.099\n6 C 9.55000 8.0040 29.343\n7 C 8.00940 7.5450 30.100\n8 C 7.20000 6.0000 45.600\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 1: Arredondar valores em colunas espec\u00edficas usando dplyr<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como arredondar os valores das colunas <strong>Vendas<\/strong> e <strong>Devolu\u00e7\u00f5es<\/strong> para 2 casas decimais:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#round values in 'sales' and 'returns' columns to 2 decimal places \n<\/span>df_new &lt;- df %&gt;% mutate(across(c(' <span style=\"color: #ff0000;\">sales<\/span> ', ' <span style=\"color: #ff0000;\">returns<\/span> '), round, <span style=\"color: #008000;\">2<\/span> ))\n\n<span style=\"color: #008080;\">#view updated data frame<\/span>\ndf_new\n\n  store sales returns promos\n1 A 4.35 1.23 12.110\n2 A 6.55 2.67 14.455\n3 A 7.54 3.44 10.277\n4 B 9.22 6.54 23.510\n5 B 4.33 8.11 20.099\n6C 9.55 8.00 29.343\n7 C 8.01 7.54 30.100\n8 C 7.20 6.00 45,600\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Observe que os valores nas colunas <strong>Vendas<\/strong> e <strong>Devolu\u00e7\u00f5es<\/strong> s\u00e3o arredondados para 2 casas decimais enquanto todas as outras colunas permanecem inalteradas.<\/span><\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 2: Arredondar valores em todas as colunas num\u00e9ricas usando dplyr<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como arredondar os valores de todas as colunas num\u00e9ricas para 2 casas decimais:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#round values in all numeric columns 2 decimal places \n<\/span>df_new &lt;- df %&gt;% mutate(across(where(is. <span style=\"color: #3366ff;\">numeric<\/span> ), round, <span style=\"color: #008000;\">2<\/span> ))\n\n<span style=\"color: #008080;\">#view updated data frame<\/span>\ndf_new\n\n  store sales returns promos\n1 A 4.35 1.23 12.11\n2 A 6.55 2.67 14.46\n3 A 7.54 3.44 10.28\n4 B 9.22 6.54 23.51\n5 B 4.33 8.11 20.10\n6C 9.55 8.00 29.34\n7 C 8.01 7.54 30.10\n8 C 7.20 6.00 45.60\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que os valores nas tr\u00eas colunas num\u00e9ricas do quadro de dados foram arredondados para 2 casas decimais.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Relacionado:<\/strong> <a href=\"https:\/\/statorials.org\/pt\/dplyr-atraves\/\" target=\"_blank\" rel=\"noopener\">Como usar a fun\u00e7\u00e3o across() em dplyr<\/a><\/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 no dplyr:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/dplyr-mudo-se-contiver\/\" target=\"_blank\" rel=\"noopener\">dplyr: Como alterar uma vari\u00e1vel se a coluna contiver uma string<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/fator-de-mutacao-dplyr\/\" target=\"_blank\" rel=\"noopener\">dplyr: Como alterar os n\u00edveis dos fatores usando mutate()<\/a><br \/><a href=\"https:\/\/statorials.org\/pt\/soma-dplyr-em-multiplas-colunas\/\" target=\"_blank\" rel=\"noopener\">dplyr: Como adicionar m\u00faltiplas colunas<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar os seguintes m\u00e9todos para arredondar valores em colunas espec\u00edficas de um quadro de dados usando o pacote dplyr em R: M\u00e9todo 1: arredondar valores em colunas espec\u00edficas library (dplyr) #round values in &#8216;sales&#8217; and &#8216;returns&#8217; columns to 2 decimal places df_new &lt;- df %&gt;% mutate(across(c(&#8216; sales &#8216;, &#8216; returns &#8216;), round, 2 [&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-4280","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 arredondar valores em colunas espec\u00edficas usando dplyr \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como arredondar valores em colunas espec\u00edficas de um quadro de dados 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\/rodada-dplyr\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como arredondar valores em colunas espec\u00edficas usando dplyr \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como arredondar valores em colunas espec\u00edficas de um quadro de dados usando dplyr, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/rodada-dplyr\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-12T07:54:28+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\/rodada-dplyr\/\",\"url\":\"https:\/\/statorials.org\/pt\/rodada-dplyr\/\",\"name\":\"Como arredondar valores em colunas espec\u00edficas usando dplyr \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-12T07:54:28+00:00\",\"dateModified\":\"2023-07-12T07:54:28+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como arredondar valores em colunas espec\u00edficas de um quadro de dados usando dplyr, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/rodada-dplyr\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/rodada-dplyr\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/rodada-dplyr\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como arredondar valores em colunas espec\u00edficas usando dplyr\"}]},{\"@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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