{"id":3330,"date":"2023-07-18T01:38:17","date_gmt":"2023-07-18T01:38:17","guid":{"rendered":"https:\/\/statorials.org\/pt\/str_sub-em-r\/"},"modified":"2023-07-18T01:38:17","modified_gmt":"2023-07-18T01:38:17","slug":"str_sub-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/str_sub-em-r\/","title":{"rendered":"Como usar str_sub em r (com exemplos)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">A fun\u00e7\u00e3o <strong>str_sub()<\/strong> do pacote <a href=\"https:\/\/stringr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">stringr<\/a> em R pode ser usada para extrair ou substituir substrings em uma string.<\/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>str_sub(string, in\u00edcio, fim)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>string:<\/strong> vetor de caracteres<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>start:<\/strong> Posi\u00e7\u00e3o do primeiro caractere<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>end:<\/strong> Posi\u00e7\u00e3o do \u00faltimo caractere<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Este tutorial fornece v\u00e1rios exemplos de como usar esta fun\u00e7\u00e3o na pr\u00e1tica com o seguinte quadro de dados:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('team_A', 'team_B', 'team_C', 'team_D'),\n                 conference=c('West', 'West', 'East', 'East'),\n                 dots=c(88, 97, 94, 104))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n    team conference points\n1 team_A West 88\n2 team_B West 97\n3 team_C East 94\n4 team_D East 104<\/strong><\/pre>\n<h2> <strong><span style=\"color: #000000;\">Exemplo 1: Extraia uma substring de uma string<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como extrair a substring que come\u00e7a na posi\u00e7\u00e3o 5 e termina na posi\u00e7\u00e3o 6 para cada string na coluna \u201cteam\u201d:<\/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> (stringr)<\/span>\n\n<\/span><span style=\"color: #008080;\">#extract characters in positions 5 through 6 of 'team' column\n<\/span>str_sub(string=df$team, start= <span style=\"color: #008000;\">5<\/span> , end= <span style=\"color: #008000;\">6<\/span> )\n\n[1] \"_A\" \"_B\" \"_C\" \"_D\"\n<\/strong><\/pre>\n<h2> <strong><span style=\"color: #000000;\">Exemplo 2: Extraia a substring para uma posi\u00e7\u00e3o espec\u00edfica<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como extrair cada caractere at\u00e9 a posi\u00e7\u00e3o 4 para cada string na coluna \u201cteam\u201d:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (stringr)<\/span>\n\n<\/span><span style=\"color: #008080;\">#extract all characters up to position 4 in 'team' column\n<\/span>str_sub(string=df$team, end= <span style=\"color: #008000;\">4<\/span> )\n\n[1] \"team\" \"team\" \"team\" \"team\"<\/strong><\/pre>\n<h2> <strong><span style=\"color: #000000;\">Exemplo 3: Extraia substring de uma posi\u00e7\u00e3o espec\u00edfica<\/span><\/strong><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como extrair cada caractere ap\u00f3s a posi\u00e7\u00e3o 3 para cada string na coluna \u201cteam\u201d:<\/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> (stringr)<\/span>\n\n<\/span><span style=\"color: #008080;\">#extract all characters after position 2 in 'team' column\n<\/span>str_sub(string=df$team, start= <span style=\"color: #008000;\">3<\/span> )\n\n[1] \"am_A\" \"am_B\" \"am_C\" \"am_D\"\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 4: Substitua uma Substring em uma String<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como substituir a substring come\u00e7ando na posi\u00e7\u00e3o 1 e terminando na posi\u00e7\u00e3o 5 para cada string na coluna &#8220;team&#8221;:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (stringr)<\/span>\n\n<\/span><span style=\"color: #008080;\">#replace all characters between position 1 and 5 in 'team' column\n<\/span>str_sub(string=df$team, start= <span style=\"color: #008000;\">1<\/span> , end= <span style=\"color: #008000;\">5<\/span> ) &lt;- 'TEAM'\n\n<span style=\"color: #008080;\">#view updated data frame<\/span>\ndf\n\n   team conference points\n1 TEAMA West 88\n2 TEAMB West 97\n3 TEAMC East 94\n4 TEAMD East 104<\/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 realizar outras tarefas comuns em R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/str_replace-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar str_replace em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/str_split-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar str_split em R<\/a><br \/> Como usar str_detect em R<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A fun\u00e7\u00e3o str_sub() do pacote stringr em R pode ser usada para extrair ou substituir substrings em uma string. Esta fun\u00e7\u00e3o usa a seguinte sintaxe: str_sub(string, in\u00edcio, fim) Ouro: string: vetor de caracteres start: Posi\u00e7\u00e3o do primeiro caractere end: Posi\u00e7\u00e3o do \u00faltimo caractere Este tutorial fornece v\u00e1rios exemplos de como usar esta fun\u00e7\u00e3o na pr\u00e1tica [&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-3330","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 str_sub em R (com exemplos) \u2013 Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o str_sub 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\/str_sub-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 str_sub em R (com exemplos) \u2013 Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o str_sub em R, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/str_sub-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-18T01:38:17+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\/str_sub-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/str_sub-em-r\/\",\"name\":\"Como usar str_sub em R (com exemplos) \u2013 Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-18T01:38:17+00:00\",\"dateModified\":\"2023-07-18T01:38:17+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar a fun\u00e7\u00e3o str_sub em R, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/str_sub-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/str_sub-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/str_sub-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar str_sub 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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