{"id":1968,"date":"2023-07-24T06:38:55","date_gmt":"2023-07-24T06:38:55","guid":{"rendered":"https:\/\/statorials.org\/id\/matriks-identitas-di-r\/"},"modified":"2023-07-24T06:38:55","modified_gmt":"2023-07-24T06:38:55","slug":"matriks-identitas-di-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/matriks-identitas-di-r\/","title":{"rendered":"Cara membuat matriks identitas di r (dengan contoh)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Dalam aljabar linier, <strong>matriks identitas<\/strong> adalah matriks persegi dengan diagonal utama dan nol di diagonal utama.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Anda dapat membuat matriks identitas di R menggunakan salah satu dari tiga metode:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create identity matrix using diag()\n<span style=\"color: #000000;\">diag(5)\n<\/span>\n#create identity matrix using diag() with explicit nrow argument\n<span style=\"color: #000000;\">diag(nrow= <span style=\"color: #008000;\">5<\/span> )\n<\/span>\n#create identity matrix by creating matrix of zeros, then filling diagonal with ones\n<\/span>mat &lt;- matrix(0, 5, 5)\ndiag(mat) &lt;- 1\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Masing-masing metode ini memberikan hasil yang sama.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Contoh berikut menunjukkan cara menggunakan masing-masing metode ini dalam praktik.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Contoh 1: Buat matriks identitas menggunakan diag()<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menggunakan fungsi <strong>diag()<\/strong> untuk membuat matriks identitas dengan 5 baris dan 5 kolom:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create 5x5 identity matrix\n<span style=\"color: #000000;\">ident &lt;- diag(5)<\/span><\/span>\n\n<span style=\"color: #008080;\">#view matrix<\/span>\nidentity\n\n     [,1] [,2] [,3] [,4] [,5]\n[1,] 1 0 0 0 0\n[2,] 0 1 0 0 0\n[3,] 0 0 1 0 0\n[4,] 0 0 0 1 0\n[5,] 0 0 0 0 1\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Hasilnya adalah matriks persegi 5&#215;5 dengan matriks di diagonal utama dan nol di diagonal lainnya.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Contoh 2:<\/strong><\/span> <span style=\"color: #000000;\"><strong>Buat matriks identitas menggunakan diag(nrow)<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menggunakan fungsi diag(nrow) untuk membuat matriks identitas 5&#215;5:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create 5x5 identity matrix\n<span style=\"color: #000000;\">ident &lt;- diag(nrow= <span style=\"color: #008000;\">5<\/span> )<\/span><\/span>\n\n<span style=\"color: #008080;\">#view matrix<\/span>\nidentity\n\n     [,1] [,2] [,3] [,4] [,5]\n[1,] 1 0 0 0 0\n[2,] 0 1 0 0 0\n[3,] 0 0 1 0 0\n[4,] 0 0 0 1 0\n[5,] 0 0 0 0 1<\/strong><\/pre>\n<h3> <strong>Contoh 3: Buat matriks identitas dalam dua langkah<\/strong><\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara membuat matriks identitas 5\u00d75 dengan terlebih dahulu membuat matriks 5\u00d75 yang semua angka nolnya kemudian mengubah nilai diagonal terdepan menjadi satuan:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#create 5x5 matrix with zeros in all positions\n<\/span>ident &lt;- matrix(0, 5, 5)\n\n<span style=\"color: #008080;\">#make diagonal values 1\n<\/span>diag(ident) &lt;- 1\n\n<span style=\"color: #008080;\">#view matrix\n<\/span>identity\n\n     [,1] [,2] [,3] [,4] [,5]\n[1,] 1 0 0 0 0\n[2,] 0 1 0 0 0\n[3,] 0 0 1 0 0\n[4,] 0 0 0 1 0\n[5,] 0 0 0 0 1\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Perhatikan bahwa masing-masing dari ketiga metode menghasilkan matriks identitas yang persis sama.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Sumber daya tambahan<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Artikel berikut memberikan pengenalan yang berguna tentang matriks identitas:<\/span><\/p>\n<p> <a href=\"https:\/\/www.khanacademy.org\/math\/precalculus\/x9e81a4f98389efdf:matrices\/x9e81a4f98389efdf:properties-of-matrix-multiplication\/a\/intro-to-identity-matrices\" target=\"_blank\" rel=\"noopener\">Khan Academy: Pengantar Matriks Identitas<\/a><br \/> <a href=\"https:\/\/en.wikipedia.org\/wiki\/Identity_matrix\" target=\"_blank\" rel=\"noopener\">Wikipedia: Penjelasan Lengkap tentang Matriks Identitas<\/a><\/p>\n<p> <span style=\"color: #000000;\">Artikel berikut menjelaskan cara melakukan operasi matriks umum lainnya di R:<\/span><\/p>\n<p> Cara melakukan perkalian matriks di R<br \/><a href=\"https:\/\/statorials.org\/id\/perkalian-bijaksana-elemen-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara melakukan perkalian dengan elemen di R<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/plot-baris-matriks-di-r\/\" target=\"_blank\" rel=\"noopener\">Cara memplot baris matriks di R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dalam aljabar linier, matriks identitas adalah matriks persegi dengan diagonal utama dan nol di diagonal utama. Anda dapat membuat matriks identitas di R menggunakan salah satu dari tiga metode: #create identity matrix using diag() diag(5) #create identity matrix using diag() with explicit nrow argument diag(nrow= 5 ) #create identity matrix by creating matrix of zeros, [&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 Membuat Matriks Identitas di R (dengan Contoh) - Statologi<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara membuat matriks identitas 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\/matriks-identitas-di-r\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara Membuat Matriks Identitas di R (dengan Contoh) - Statologi\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara membuat matriks identitas di R, dengan beberapa contoh.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/matriks-identitas-di-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T06:38:55+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=\"1 menit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/id\/matriks-identitas-di-r\/\",\"url\":\"https:\/\/statorials.org\/id\/matriks-identitas-di-r\/\",\"name\":\"Cara Membuat Matriks Identitas di R (dengan Contoh) - Statologi\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-24T06:38:55+00:00\",\"dateModified\":\"2023-07-24T06:38:55+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara membuat matriks identitas di R, dengan beberapa contoh.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/matriks-identitas-di-r\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/matriks-identitas-di-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/matriks-identitas-di-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Cara membuat matriks identitas 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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