{"id":4027,"date":"2023-07-14T02:21:32","date_gmt":"2023-07-14T02:21:32","guid":{"rendered":"https:\/\/statorials.org\/pt\/letras-em-r\/"},"modified":"2023-07-14T02:21:32","modified_gmt":"2023-07-14T02:21:32","slug":"letras-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/letras-em-r\/","title":{"rendered":"Como usar letras em r (com exemplos)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a constante <strong>LETTERS<\/strong> em R para acessar as letras do alfabeto.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram as maneiras mais comuns de usar a constante <strong>LETTERS<\/strong> na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 1: Gerar letras mai\u00fasculas<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Se voc\u00ea simplesmente digitar <strong>LETRAS<\/strong> , cada letra do alfabeto ser\u00e1 exibida em mai\u00fascula:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #008080;\">#display every letter in alphabet in uppercase\n<\/span><span style=\"color: #000000;\">LETTERS\n\n [1] \"A\" \"B\" \"C\" \"D\" \"E\" \"F\" \"G\" \"H\" \"I\" \"J\" \"K\" \"L\" \"M\" \"N\" \"O\" \"P \"Q\" \"R\" \"S\"\n[20] \u201cT\u201d \u201cU\u201d \u201cV\u201d \u201cW\u201d \u201cX\u201d \u201cY\u201d \u201cZ\u201d\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Para acessar um subconjunto espec\u00edfico de letras do alfabeto, voc\u00ea pode usar a seguinte sintaxe:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display letters in positions 4 through 8 in uppercase\n<span style=\"color: #000000;\">LETTERS[4:8]\n\n[1] \u201cD\u201d \u201cE\u201d \u201cF\u201d \u201cG\u201d \u201cH\u201d\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que apenas as letras nas posi\u00e7\u00f5es 4 a 8 s\u00e3o retornadas.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 2: Gerar letras min\u00fasculas<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Se voc\u00ea digitar <strong>letras<\/strong> , cada letra do alfabeto ser\u00e1 exibida em min\u00fasculas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display every letter in alphabet in lowercase\n<span style=\"color: #000000;\">letters\n\n [1] \"a\" \"b\" \"c\" \"d\" \"e\" \"f\" \"g\" \"h\" \"i\" \"j\" \"k\" \"l\" \"m\" \"n\" \"o\" \"p \" \"q\" \"r\" \"s\"\n[20] \"t\" \"u\" \"v\" \"w\" \"x\" \"y\" \"z\"\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Para acessar um subconjunto espec\u00edfico de letras do alfabeto, voc\u00ea pode usar a seguinte sintaxe:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display letters in positions 4 through 8 in lowercase\n<span style=\"color: #000000;\">letters[4:8]\n\n[1] \"d\" \"e\" \"f\" \"g\" \"h\"\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que apenas as letras nas posi\u00e7\u00f5es 4 a 8 s\u00e3o retornadas.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 3: Gerar letras aleat\u00f3rias<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Voc\u00ea pode selecionar aleatoriamente uma letra do alfabeto usando a fun\u00e7\u00e3o <strong>sample()<\/strong> :<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#select random uppercase letter from alphabet\n<span style=\"color: #000000;\">sample(LETTERS, <span style=\"color: #008000;\">1<\/span> )\n\n[1] \u201cK\u201d\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Voc\u00ea tamb\u00e9m pode gerar uma sequ\u00eancia aleat\u00f3ria de letras usando a fun\u00e7\u00e3o <strong>paste()<\/strong> com a fun\u00e7\u00e3o <strong>sample()<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#generate random sequence of 10 letters in uppercase\n<span style=\"color: #000000;\">paste(sample(LETTERS, <span style=\"color: #008000;\">10<\/span> , replace= <span style=\"color: #008000;\">TRUE<\/span> ), collapse=\"\")\n\n[1] \u201cBPTISQSOJI\u201d\n<\/span><\/span><\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 4: Concatenando letras com outras strings<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Voc\u00ea tamb\u00e9m pode usar a fun\u00e7\u00e3o <strong>Paste()<\/strong> para concatenar cada letra do alfabeto com outra string:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#display each letter with \"letter_\" in front\n<\/span>paste(\" <span style=\"color: #ff0000;\">letter_<\/span> \", letters, sep=\"\")\n\n [1] \"letter_a\" \"letter_b\" \"letter_c\" \"letter_d\" \"letter_e\" \"letter_f\"\n [7] \"letter_g\" \"letter_h\" \"letter_i\" \"letter_j\" \"letter_k\" \"letter_l\"\n[13] \"letter_m\" \"letter_n\" \"letter_o\" \"letter_p\" \"letter_q\" \"letter_r\"\n[19] \"letter_s\" \"letter_t\" \"letter_u\" \"letter_v\" \"letter_w\" \"letter_x\"\n[25] \"letter_y\" \"letter_z\"\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que &#8220;letra_&#8221; foi concatenada no in\u00edcio de cada letra.<\/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-remova-o-ultimo-caractere-da-string\/\" target=\"_blank\" rel=\"noopener\">Como remover o \u00faltimo caractere da string em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/r-procure-por-caractere-em-string\/\" target=\"_blank\" rel=\"noopener\">Como encontrar a localiza\u00e7\u00e3o dos caracteres em uma string em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/r-selecione-colunas-contendo-string\/\" target=\"_blank\" rel=\"noopener\">Como selecionar colunas contendo uma string espec\u00edfica em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a constante LETTERS em R para acessar as letras do alfabeto. Os exemplos a seguir mostram as maneiras mais comuns de usar a constante LETTERS na pr\u00e1tica. Exemplo 1: Gerar letras mai\u00fasculas Se voc\u00ea simplesmente digitar LETRAS , cada letra do alfabeto ser\u00e1 exibida em mai\u00fascula: #display every letter in alphabet in [&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-4027","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 LETRAS em R (com exemplos) \u2013 Estatoriais<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar LETRAS 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\/letras-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 LETRAS em R (com exemplos) \u2013 Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar LETRAS em R, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/letras-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-14T02:21:32+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\/letras-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/letras-em-r\/\",\"name\":\"Como usar LETRAS em R (com exemplos) \u2013 Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-14T02:21:32+00:00\",\"dateModified\":\"2023-07-14T02:21:32+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar LETRAS em R, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/letras-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/letras-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/letras-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar letras 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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