{"id":4290,"date":"2023-07-12T06:02:14","date_gmt":"2023-07-12T06:02:14","guid":{"rendered":"https:\/\/statorials.org\/id\/r-string-sub-ujung\/"},"modified":"2023-07-12T06:02:14","modified_gmt":"2023-07-12T06:02:14","slug":"r-string-sub-ujung","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/r-string-sub-ujung\/","title":{"rendered":"R: mengekstrak substring dari akhir string"},"content":{"rendered":"

<\/p>\n

\n

Anda dapat menggunakan metode berikut untuk mengekstrak substring di R mulai dari akhir string:<\/span><\/p>\n

Metode 1: Gunakan Basis R<\/strong><\/span><\/p>\n

 #define function to extract n characters starting from end\n<\/span>substr_end <- function<\/span> (x, n){\n  substr(x, nchar(x)-n+ 1<\/span> , nchar(x))\n}\n\n#extract 3 characters starting from end<\/span>\nsubstr_end(my_string, 3<\/span> )\n<\/strong><\/pre>\n
 Metode 2: Gunakan paket stringr<\/strong><\/span><\/p>\n
 library<\/span> (stringr)\n\n#extract 3 characters starting from end<\/span> \nstr_sub(my_string, start = - 3<\/span> )\n<\/strong><\/pre>\n
 Kedua contoh ini mengekstrak tiga karakter terakhir dari string yang disebut my_string<\/strong> .<\/span><\/p>\n
 Contoh berikut menunjukkan cara menggunakan setiap metode dalam praktik dengan kerangka data berikut:<\/span><\/p>\n
 #create data frame\n<\/span>df <- data. frame<\/span> (team=c('Mavericks', 'Lakers', 'Hawks', 'Nets', 'Warriors'),\n                 dots=c(100, 143, 129, 113, 123))\n\n#view data frame\n<\/span>df\n\n       team points\n1 Mavericks 100\n2 Lakers 143\n3 Hawks 129\n4 Nets 113\n5 Warriors 123\n<\/strong><\/span><\/pre>\n
 Contoh 1: Ekstrak substring dari akhir menggunakan Base R<\/strong><\/span><\/h2>\n
 Kode berikut menunjukkan cara mendefinisikan fungsi kustom di basis R dan kemudian menggunakan fungsi tersebut untuk mengekstrak tiga karakter terakhir dari setiap string di kolom tim<\/strong> :<\/span><\/p>\n
 #define function to extract n characters starting from end\n<\/span>substr_end <- function<\/span> (x, n){\n  substr(x, nchar(x)-n+ 1<\/span> , nchar(x))\n}\n\n#create new column that extracts last 3 characters from team column<\/span>\ndf$team_last3 <- substr_end(my_string, 3<\/span> )\n\n#view updated data frame<\/span>\ndf\n\n       team points team_last3\n1 Mavericks 100 cks\n2 Lakers 143ers\n3 Hawks 129 wks\n4 Nets 113 ets\n5 Warriors 123 gold\n<\/strong><\/pre>\n
 Perhatikan bahwa kolom baru bernama team_last3<\/b> berisi tiga karakter terakhir dari setiap string di kolom tim<\/strong> pada bingkai data.<\/span><\/p>\n
 Contoh 2: Ekstrak substring dari akhir menggunakan paket stringr<\/strong><\/span><\/h2>\n
 Kode berikut menunjukkan cara menggunakan fungsi str_sub()<\/strong> dari paket stringr<\/strong> di R untuk mengekstrak tiga karakter terakhir dari setiap string di kolom tim<\/strong> :<\/span><\/p>\n
 library<\/span> (stringr)\n<\/span>\n#create new column that extracts last 3 characters from team column<\/span>\ndf$team_last3 <- str_sub(df$team, start = - 3<\/span> )\n\n#view updated data frame<\/span>\ndf\n\n       team points team_last3\n1 Mavericks 100 cks\n2 Lakers 143ers\n3 Hawks 129 wks\n4 Nets 113 ets\n5 Warriors 123 gold\n<\/strong><\/pre>\n
 Perhatikan bahwa kolom baru bernama team_last3<\/b> berisi tiga karakter terakhir dari setiap string di kolom tim<\/strong> pada bingkai data.<\/span><\/p>\n
 Hal ini sesuai dengan hasil metode sebelumnya yang menggunakan basis R.<\/span><\/p>\n
 Terkait<\/strong> : Pengenalan fungsi str_sub di R<\/a><\/span><\/p>\n
 Sumber daya tambahan<\/strong><\/span><\/h2>\n
 Tutorial berikut menjelaskan cara melakukan tugas umum lainnya di R:<\/span><\/p>\n
 Cara memilih kolom yang berisi string tertentu di R<\/a>
 Cara menghapus karakter dari string di R<\/a>
Cara menemukan lokasi karakter dalam string di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Anda dapat menggunakan metode berikut untuk mengekstrak substring di R mulai dari akhir string: Metode 1: Gunakan Basis R #define function to extract n characters starting from end substr_end <- function (x, n){ substr(x, nchar(x)-n+ 1 , nchar(x)) } #extract 3 characters starting from end substr_end(my_string, 3 ) Metode 2: Gunakan paket stringr library (stringr) […]<\/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":[],"yoast_head":"\nA: Ekstrak substring dari akhir string - Statorials<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara mengekstrak substring di R mulai dari akhir string, beserta contohnya.\" \/>\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\/id\/r-string-sub-ujung\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A: Ekstrak substring dari akhir string - Statorials\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara mengekstrak substring di R mulai dari akhir string, beserta contohnya.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/r-string-sub-ujung\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-12T06:02:14+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Ditulis oleh\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimasi waktu membaca\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 menit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/id\/r-string-sub-ujung\/\",\"url\":\"https:\/\/statorials.org\/id\/r-string-sub-ujung\/\",\"name\":\"A: Ekstrak substring dari akhir string - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-12T06:02:14+00:00\",\"dateModified\":\"2023-07-12T06:02:14+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara mengekstrak substring di R mulai dari akhir string, beserta contohnya.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/r-string-sub-ujung\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/r-string-sub-ujung\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/r-string-sub-ujung\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"R: mengekstrak substring dari akhir string\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/id\/#website\",\"url\":\"https:\/\/statorials.org\/id\/\",\"name\":\"Statorials\",\"description\":\"Panduan anda untuk kompetensi statistik!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/id\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"id\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\",\"name\":\"Benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"id\",\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/id\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/id\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin anderson\"},\"description\":\"Halo, saya Benjamin, pensiunan profesor statistika yang menjadi guru Statorial yang berdedikasi. 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