{"id":4291,"date":"2023-07-12T05:50:56","date_gmt":"2023-07-12T05:50:56","guid":{"rendered":"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/"},"modified":"2023-07-12T05:50:56","modified_gmt":"2023-07-12T05:50:56","slug":"funcao-nchar-em-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/","title":{"rendered":"Como usar a fun\u00e7\u00e3o nchar() em r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">A fun\u00e7\u00e3o <strong>nchar()<\/strong> em R pode ser usada para contar o comprimento dos caracteres em um objeto string.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Esta fun\u00e7\u00e3o usa a seguinte sintaxe b\u00e1sica:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>nchar(x, manterNA = NA)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Ouro:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>x<\/strong> : Nome do objeto string<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>keepNA<\/strong> : O padr\u00e3o \u00e9 retornar &#8216;NA&#8217; se NA for encontrado. Se definido como TRUE, um valor 2 ser\u00e1 retornado para representar o comprimento de &#8220;NA&#8221; como uma string.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar esta fun\u00e7\u00e3o na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 1: Use nchar() para contar o comprimento dos caracteres<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Suponha que temos 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 style=\"color: #000000;\">df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (player=c('J Kidd', 'Kobe Bryant', 'Paul A. Pierce', 'Steve Nash'),\n                 dots=c(22, 34, 30, 17))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n          player points\n1 J Kidd 22\n2 Kobe Bryant 34\n3 Paul A. Pierce 30\n4Steve Nash 17\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>nchar()<\/strong> para contar o comprimento de cada string na coluna do <strong>leitor<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column that counts length of characters in player column\n<span style=\"color: #000000;\">df$player_length &lt;- nchar(df$player)\n<\/span>\n#view updated data frame\n<span style=\"color: #000000;\">df<\/span>\n\n<span style=\"color: #000000;\">player points player_length\n1 J Kidd 22 6\n2 Kobe Bryant 34 11\n3 Paul A. Pierce 30 14\n4 Steve Nash 17 10\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">A nova coluna chamada <strong>player_length<\/strong> cont\u00e9m o comprimento de cada string na coluna <strong>do player<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Observe que a fun\u00e7\u00e3o <strong>nchar()<\/strong> tamb\u00e9m conta espa\u00e7os e caracteres especiais.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Por exemplo, no nome &#8220;Paul A. Pierce&#8221;, a fun\u00e7\u00e3o <strong>nchar()<\/strong> conta os espa\u00e7os e o ponto mais todas as letras para obter um comprimento total de 14.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 2: Use nchar() com valores NA<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Suponha que temos 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 style=\"color: #000000;\">df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (player=c(NA, 'Kobe Bryant', 'Paul A. Pierce', 'Steve Nash'),\n                 dots=c(22, 34, 30, 17))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n          player points\n1 &lt;NA&gt; 22\n2 Kobe Bryant 34\n3 Paul A. Pierce 30\n4Steve Nash 17\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Se usarmos a fun\u00e7\u00e3o <strong>nchar()<\/strong> para contar o comprimento de cada string na coluna do <strong>leitor<\/strong> , ent\u00e3o um valor NA ser\u00e1 retornado para a primeira linha por padr\u00e3o:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column that counts length of characters in player column\n<span style=\"color: #000000;\">df$player_length &lt;- nchar(df$player)\n<\/span>\n#view updated data frame\n<span style=\"color: #000000;\">df<\/span>\n\n<span style=\"color: #000000;\">player points player_length\n1 &lt;NA&gt; 22 NA\n2 Kobe Bryant 34 11\n3 Paul A. Pierce 30 14\n4 Steve Nash 17 10\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Por\u00e9m, se usarmos o argumento <strong>keepNA=FALSE<\/strong> ent\u00e3o um valor <strong>2<\/strong> ser\u00e1 retornado para cada string igual a NA:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column that counts length of characters in player column\n<span style=\"color: #000000;\">df$player_length &lt;- nchar(df$player, keepNA= <span style=\"color: #008000;\">FALSE<\/span> )\n<\/span>\n#view updated data frame\n<span style=\"color: #000000;\">df\n\n          player points player_length\n1 &lt;NA&gt; 22 2\n2 Kobe Bryant 34 11\n3 Paul A. Pierce 30 14\n4 Steve Nash 17 10\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que um valor <strong>2<\/strong> \u00e9 retornado para o primeiro jogador, pois representa o comprimento de &#8220;NA&#8221; como uma string.<\/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\/funcao-de-substring-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar a fun\u00e7\u00e3o substring em R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/str_pad-em-r\/\" target=\"_blank\" rel=\"noopener\">Como usar a fun\u00e7\u00e3o str_pad em R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A fun\u00e7\u00e3o nchar() em R pode ser usada para contar o comprimento dos caracteres em um objeto string. Esta fun\u00e7\u00e3o usa a seguinte sintaxe b\u00e1sica: nchar(x, manterNA = NA) Ouro: x : Nome do objeto string keepNA : O padr\u00e3o \u00e9 retornar &#8216;NA&#8217; se NA for encontrado. Se definido como TRUE, um valor 2 ser\u00e1 [&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-4291","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 a fun\u00e7\u00e3o nchar() em R \u2013 Estatoriais<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o nchar() 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\/funcao-nchar-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 a fun\u00e7\u00e3o nchar() em R \u2013 Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar a fun\u00e7\u00e3o nchar() em R, com v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-12T05:50:56+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\/funcao-nchar-em-r\/\",\"url\":\"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/\",\"name\":\"Como usar a fun\u00e7\u00e3o nchar() em R \u2013 Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-12T05:50:56+00:00\",\"dateModified\":\"2023-07-12T05:50:56+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar a fun\u00e7\u00e3o nchar() em R, com v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como usar a fun\u00e7\u00e3o nchar() em r\"}]},{\"@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. Com vasta experi\u00eancia e conhecimento na \u00e1rea de estat\u00edstica, estou empenhado em compartilhar meu conhecimento para capacitar os alunos por meio de Statorials. Saber mais\",\"sameAs\":[\"https:\/\/statorials.org\/pt\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Como usar a fun\u00e7\u00e3o nchar() em R \u2013 Estatoriais","description":"Este tutorial explica como usar a fun\u00e7\u00e3o nchar() em R, com v\u00e1rios exemplos.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/","og_locale":"pt_PT","og_type":"article","og_title":"Como usar a fun\u00e7\u00e3o nchar() em R \u2013 Estatoriais","og_description":"Este tutorial explica como usar a fun\u00e7\u00e3o nchar() em R, com v\u00e1rios exemplos.","og_url":"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/","og_site_name":"Statorials","article_published_time":"2023-07-12T05:50:56+00:00","author":"Dr. benjamim anderson","twitter_card":"summary_large_image","twitter_misc":{"Escrito por":"Dr. benjamim anderson","Tempo estimado de leitura":"2 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/","url":"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/","name":"Como usar a fun\u00e7\u00e3o nchar() em R \u2013 Estatoriais","isPartOf":{"@id":"https:\/\/statorials.org\/pt\/#website"},"datePublished":"2023-07-12T05:50:56+00:00","dateModified":"2023-07-12T05:50:56+00:00","author":{"@id":"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666"},"description":"Este tutorial explica como usar a fun\u00e7\u00e3o nchar() em R, com v\u00e1rios exemplos.","breadcrumb":{"@id":"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/#breadcrumb"},"inLanguage":"pt-PT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/pt\/funcao-nchar-em-r\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Lar","item":"https:\/\/statorials.org\/pt\/"},{"@type":"ListItem","position":2,"name":"Como usar a fun\u00e7\u00e3o nchar() em r"}]},{"@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. Com vasta experi\u00eancia e conhecimento na \u00e1rea de estat\u00edstica, estou empenhado em compartilhar meu conhecimento para capacitar os alunos por meio de Statorials. Saber mais","sameAs":["https:\/\/statorials.org\/pt"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts\/4291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/comments?post=4291"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/posts\/4291\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/media?parent=4291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/categories?post=4291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/pt\/wp-json\/wp\/v2\/tags?post=4291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}