{"id":3152,"date":"2023-07-18T23:20:40","date_gmt":"2023-07-18T23:20:40","guid":{"rendered":"https:\/\/statorials.org\/id\/interpolasi-linier-di-r\/"},"modified":"2023-07-18T23:20:40","modified_gmt":"2023-07-18T23:20:40","slug":"interpolasi-linier-di-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/interpolasi-linier-di-r\/","title":{"rendered":"Cara melakukan interpolasi linier di r (dengan contoh)"},"content":{"rendered":"

<\/p>\n

\n

Interpolasi linier<\/strong> adalah proses memperkirakan nilai fungsi yang tidak diketahui antara dua nilai yang diketahui.<\/span><\/p>\n

Diberikan dua nilai yang diketahui (x 1<\/sub> , y 1<\/sub> ) dan (x 2<\/sub> , y 2<\/sub> ), kita dapat memperkirakan nilai y untuk suatu titik x menggunakan rumus berikut:<\/span><\/p>\n

kamu = kamu 1<\/sub> + (xx 1<\/sub> )(kamu 2<\/sub> -kamu 1<\/sub> )\/(x 2<\/sub> -x 1<\/sub> )<\/span><\/p>\n

Contoh berikut menunjukkan cara melakukan interpolasi linier di R.<\/span><\/p>\n

Contoh: interpolasi linier di R<\/strong><\/span><\/h3>\n

Misalkan kita memiliki bingkai data berikut dengan nilai x dan y di R:<\/span><\/p>\n

 #define data frame\n<\/span>df <- data. frame<\/span> (x=c(2, 4, 6, 8, 10, 12, 14, 16, 18, 20),\n                 y=c(4, 7, 11, 16, 22, 29, 38, 49, 63, 80))\n\n#view data frame\n<\/span>df\n\n    xy\n1 2 4\n2 4 7\n3 6 11\n4 8 16\n5 10 22\n6 12 29\n7 14 38\n8 16 49\n9 18 63\n10 20 80<\/strong><\/pre>\n
 Kita dapat menggunakan kode berikut untuk membuat scatterplot untuk memvisualisasikan nilai (x,y) dalam bingkai data:<\/span> <\/p>\n
 #create scatterplot<\/span>\nplot(df$x, df$y, col=' blue<\/span> ', pch= 19<\/span> )\n<\/span><\/span><\/strong><\/pre>\n
\"\"<\/p>\n
 Sekarang misalkan kita ingin mencari nilai y yang terkait dengan nilai x baru sebesar 13<\/strong> .<\/span><\/p>\n
 Kita dapat menggunakan fungsi approx()<\/strong> di R untuk melakukan ini:<\/span><\/p>\n
 #fit linear regression model using data frame<\/span>\nmodel <- lm(y ~ x, data = df)\n\n#interpolate y value based on x value of 13\n<\/span>y_new = approx(df$x, df$y, xout= 13<\/span> )\n\n#view interpolated y value\n<\/span>y_new\n\n$x\n[1] 13\n\n$y\n[1] 33.5\n<\/strong><\/span><\/pre>\n
 Estimasi nilai y ternyata 33,5<\/strong> .<\/span><\/p>\n
 Jika kita menambahkan titik (13, 33.5) ke plot kita, sepertinya fungsinya cukup cocok:<\/span> <\/p>\n
 #create scatterplot\n<\/span>plot(df$x, df$y, col=' blue<\/span> ', pch= 19<\/span> )\n\n#add the predicted point to the scatterplot\n<\/span>points(13, y_new$y, col=' red<\/span> ', pch= 19<\/span> )\n<\/span><\/span><\/strong><\/pre>\n
\"interpolasi<\/p>\n
 Kita dapat menggunakan rumus yang tepat ini untuk melakukan interpolasi linier untuk setiap nilai x baru.<\/span><\/p>\n
 Sumber daya tambahan<\/strong><\/span><\/h3>\n
 Tutorial berikut menjelaskan cara melakukan tugas umum lainnya di R:<\/span><\/p>\n
 Cara menyelesaikan sistem persamaan di R<\/a>
 Cara memprediksi nilai dalam R menggunakan model regresi berganda<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Interpolasi linier adalah proses memperkirakan nilai fungsi yang tidak diketahui antara dua nilai yang diketahui. Diberikan dua nilai yang diketahui (x 1 , y 1 ) dan (x 2 , y 2 ), kita dapat memperkirakan nilai y untuk suatu titik x menggunakan rumus berikut: kamu = kamu 1 + (xx 1 )(kamu 2 -kamu […]<\/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":"\nCara Melakukan Interpolasi Linier di R (dengan Contoh) - Statologi<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara melakukan interpolasi linier di R, termasuk contoh lengkapnya.\" \/>\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\/interpolasi-linier-di-r\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara Melakukan Interpolasi Linier di R (dengan Contoh) - Statologi\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara melakukan interpolasi linier di R, termasuk contoh lengkapnya.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/interpolasi-linier-di-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-18T23:20:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/lineairer1.jpg\" \/>\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\/interpolasi-linier-di-r\/\",\"url\":\"https:\/\/statorials.org\/id\/interpolasi-linier-di-r\/\",\"name\":\"Cara Melakukan Interpolasi Linier di R (dengan Contoh) - Statologi\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-18T23:20:40+00:00\",\"dateModified\":\"2023-07-18T23:20:40+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara melakukan interpolasi linier di R, termasuk contoh lengkapnya.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/interpolasi-linier-di-r\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/interpolasi-linier-di-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/interpolasi-linier-di-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Cara melakukan interpolasi linier 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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