{"id":3506,"date":"2023-07-17T03:21:23","date_gmt":"2023-07-17T03:21:23","guid":{"rendered":"https:\/\/statorials.org\/id\/fungsi-peta-ke-r\/"},"modified":"2023-07-17T03:21:23","modified_gmt":"2023-07-17T03:21:23","slug":"fungsi-peta-ke-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/fungsi-peta-ke-r\/","title":{"rendered":"Cara menggunakan fungsi map() di r (dengan contoh)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Fungsi <strong>map()<\/strong> dari paket <strong>purrr<\/strong> di R dapat digunakan untuk menerapkan fungsi ke setiap elemen vektor atau daftar dan mengembalikan daftar yang sesuai.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Fungsi ini menggunakan sintaks dasar berikut:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>peta(.x, .f)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Emas:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>.x<\/strong> : Vektor atau daftar<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>.f<\/strong> : Suatu fungsi<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Contoh berikut menunjukkan cara menggunakan fungsi ini dalam berbagai skenario.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Contoh 1: Gunakan map() untuk menghasilkan variabel acak<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menggunakan fungsi <strong>map()<\/strong> untuk menghasilkan tiga variabel acak yang masing-masing berisi lima nilai yang mengikuti distribusi normal standar:<\/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> (purrr)\n\n<span style=\"color: #008080;\">#definevector\n<\/span>data &lt;- 1:3\n\n<span style=\"color: #008080;\">#apply rnorm() function to each value in vector<\/span>\ndata %&gt;%\n  map( <span style=\"color: #008000;\">function<\/span> (x) rnorm(5, x))\n\n[[1]]\n[1] 0.0556774 1.8053082 2.6489861 2.2640136 1.1062672\n\n[[2]]\n[1] 1.450175 1.123048 3.413677 3.055304 2.713801\n\n[[3]]\n[1] 2.936732 2.157129 3.693738 2.994391 2.567040\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Untuk setiap elemen vektor asli, fungsi <strong>map()<\/strong> menerapkan fungsi rnorm() untuk menghasilkan lima nilai acak dari <a href=\"https:\/\/statorials.org\/id\/distribusi-normal-vs-distribusi-normal-standar\/\" target=\"_blank\" rel=\"noopener\">distribusi normal standar<\/a> .<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Contoh 2: Gunakan map() untuk mengubah setiap nilai menjadi vektor<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menggunakan fungsi <strong>map()<\/strong> untuk menghitung kuadrat setiap nilai dalam vektor:<\/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> (purrr)\n\n<span style=\"color: #008080;\">#definevector\n<\/span>data &lt;- c(2, 4, 10, 15, 20)\n\n<span style=\"color: #008080;\">#calculate square of each value in the vector<\/span>\ndata %&gt;%\n  map( <span style=\"color: #008000;\">function<\/span> (x) x^2)\n\n[[1]]\n[1] 4\n\n[[2]]\n[1] 16\n\n[[3]]\n[1] 100\n\n[[4]]\n[1] 225\n\n[[5]]\n[1] 400<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Untuk setiap elemen vektor asli, fungsi <strong>map()<\/strong> menerapkan fungsi yang menghitung kuadrat setiap nilai.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Contoh 3: Gunakan map() untuk menghitung rata-rata setiap vektor dalam daftar<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menggunakan fungsi <strong>map()<\/strong> untuk menghitung nilai rata-rata setiap vektor dalam daftar:<\/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> (purrr)\n\n<span style=\"color: #008080;\">#define list of vectors<\/span>\ndata &lt;- list(c(1, 2, 3),\n             c(4, 5, 6),\n             c(7, 8, NA))\n\n<span style=\"color: #008080;\">#calculate mean value of each vector in list\n<\/span>data %&gt;%\n  map(mean, na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> )\n\n[[1]]\n[1] 2\n\n[[2]]\n[1] 5\n\n[[3]]\n[1] 7.5<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Untuk setiap vektor dalam daftar, fungsi <strong>map()<\/strong> menghitung nilai rata-rata.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Dari hasilnya kita dapat melihat:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Nilai rata-rata vektor pertama dalam daftar adalah <strong>2<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">Nilai rata-rata vektor kedua dalam daftar adalah <strong>5<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">Nilai rata-rata vektor ketiga dalam daftar adalah <strong>7,5<\/strong> .<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>Catatan<\/strong> : Argumen <strong>na.rm=TRUE<\/strong> memberitahu R untuk mengabaikan nilai NA saat menghitung rata-rata.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Sumber daya tambahan<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Tutorial berikut menjelaskan cara menggunakan fungsi umum lainnya di R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/id\/taply-r\/\">Cara menggunakan fungsi tapply() di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/r-fungsi-redup\/\" target=\"_blank\" rel=\"noopener\">Cara menggunakan fungsi dim() di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/fungsi-tabel-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara menggunakan fungsi table() di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/fungsi-tanda-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara menggunakan fungsi sign() di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fungsi map() dari paket purrr di R dapat digunakan untuk menerapkan fungsi ke setiap elemen vektor atau daftar dan mengembalikan daftar yang sesuai. Fungsi ini menggunakan sintaks dasar berikut: peta(.x, .f) Emas: .x : Vektor atau daftar .f : Suatu fungsi Contoh berikut menunjukkan cara menggunakan fungsi ini dalam berbagai skenario. Contoh 1: Gunakan map() [&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":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cara menggunakan fungsi map() di R (dengan contoh) - Statorial<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara menggunakan fungsi map() di R, dengan beberapa contoh.\" \/>\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\/fungsi-peta-ke-r\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara menggunakan fungsi map() di R (dengan contoh) - Statorial\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara menggunakan fungsi map() di R, dengan beberapa contoh.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/fungsi-peta-ke-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-17T03:21:23+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\/fungsi-peta-ke-r\/\",\"url\":\"https:\/\/statorials.org\/id\/fungsi-peta-ke-r\/\",\"name\":\"Cara menggunakan fungsi map() di R (dengan contoh) - Statorial\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-17T03:21:23+00:00\",\"dateModified\":\"2023-07-17T03:21:23+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara menggunakan fungsi map() di R, dengan beberapa contoh.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/fungsi-peta-ke-r\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/fungsi-peta-ke-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/fungsi-peta-ke-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Cara menggunakan fungsi map() di r (dengan contoh)\"}]},{\"@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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