{"id":1542,"date":"2023-07-25T23:14:40","date_gmt":"2023-07-25T23:14:40","guid":{"rendered":"https:\/\/statorials.org\/id\/memudarkan-plot-altman-r\/"},"modified":"2023-07-25T23:14:40","modified_gmt":"2023-07-25T23:14:40","slug":"memudarkan-plot-altman-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/memudarkan-plot-altman-r\/","title":{"rendered":"Cara membuat plot bland-altman di r (langkah demi langkah)"},"content":{"rendered":"

<\/p>\n

\n

Plot Bland-Altman<\/a> digunakan untuk memvisualisasikan perbedaan pengukuran antara dua instrumen berbeda atau dua teknik pengukuran berbeda.<\/span><\/p>\n

Berguna untuk menentukan seberapa mirip dua instrumen atau teknik dalam mengukur konsep yang sama.<\/span><\/p>\n

Tutorial ini memberikan contoh langkah demi langkah tentang cara membuat plot Bland-Altman di R.<\/span><\/p>\n

Langkah 1: Buat datanya<\/strong><\/span><\/h3>\n

Misalkan seorang ahli biologi menggunakan dua instrumen berbeda (A dan B) untuk mengukur berat 20 katak berbeda yang sama, dalam gram.<\/span><\/p>\n

Kami akan membuat kerangka data berikut di R yang mewakili berat setiap katak, yang diukur oleh setiap instrumen:<\/span><\/p>\n

 #create data<\/span>\ndf <- data. frame<\/span> (A=c(5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9,\n                     10, 11, 13, 14, 14, 15, 18, 22, 25),\n                 B=c(4, 4, 5, 5, 5, 7, 8, 6, 9, 7, 7, 11,\n                     13, 13, 12, 13, 14, 19, 19, 24))\n\n#view first six rows of data\n<\/span>head(df)\n\n  AB\n1 5 4\n2 5 4\n3 5 5\n4 6 5\n5 6 5\n6 7 7<\/strong><\/pre>\n
 Langkah 2: Hitung perbedaan pengukuran<\/strong><\/span><\/h3>\n
 Selanjutnya, kita akan membuat dua kolom baru di bingkai data yang berisi rata-rata pengukuran setiap katak serta selisih pengukurannya:<\/span><\/p>\n
 #create new column for average measurement<\/span>\ndf$avg <- rowMeans(df) \n<\/span>\n#create new column for difference in measurements\ndf$diff <- df$A - df$B<\/span><\/span>\n\n#view first six rows of data\n<\/span>head(df)\n\n  AB avg diff\n1 5 4 4.5 1\n2 5 4 4.5 1\n3 5 5 5.0 0\n4 6 5 5.5 1\n5 6 5 5.5 1\n6 7 7 7.0 0\n<\/strong><\/pre>\n
 Langkah 3: Hitung perbedaan rata-rata dan interval kepercayaan<\/strong><\/span><\/h3>\n
 Selanjutnya kita akan menghitung rata-rata selisih pengukuran kedua instrumen serta batas atas dan bawah interval kepercayaan 95% untuk selisih rata-rata tersebut:<\/span><\/p>\n
 #find average difference<\/span>\nmean_diff <- mean(df$diff)\n\nmean_diff\n\n[1] 0.5\n<\/span>\n#find lower 95% confidence interval limits\nlower <- mean_diff - 1.96*sd(df$diff)<\/span>\n\nlower\n\n[1] -1.921465\n<\/span>\n#find upper 95% confidence interval limits\nupper <- mean_diff + 1.96*sd(df$diff)<\/span>\n\nupper<\/span>\n\n[1] 2.921465\n<\/span><\/span><\/strong><\/pre>\n
 Perbedaan rata-ratanya adalah 0,5<\/strong> dan interval kepercayaan 95% untuk perbedaan rata-rata tersebut adalah [-1.921, 2.921]<\/strong> .<\/span><\/p>\n
 Langkah 4: Buat Plot Bland-Altman<\/strong><\/span><\/h3>\n
 Selanjutnya, kita akan menggunakan kode berikut untuk membuat plot Bland-Altman menggunakan paket visualisasi data ggplot2<\/a> :<\/span><\/span> <\/p>\n
 #load ggplot2\n<\/span><\/span>library<\/span> (ggplot2)\n\n#create Bland-Altman plot\n<\/span>ggplot(df, aes<\/span> (x = avg, y = diff)) +\n  geom_point(size=2) +\n  geom_hline(yintercept = mean_diff) +\n  geom_hline(yintercept = lower, color = \" red<\/span> \", linetype=\" dashed<\/span> \") +\n  geom_hline(yintercept = upper, color = \" red<\/span> \", linetype=\" dashed<\/span> \") +\n  ggtitle(\" Bland-Altman Plot<\/span> \") +\n  ylab(\" Difference Between Measurements<\/span> \") +\n  xlab(\" Average Measurement<\/span> \")<\/span><\/strong> <\/pre>\n
\"Plot<\/p>\n
 Sumbu x pada plot menampilkan rata-rata pengukuran kedua instrumen dan sumbu y menampilkan selisih pengukuran kedua instrumen.<\/span><\/p>\n
 Garis hitam mewakili perbedaan rata-rata pengukuran antara kedua instrumen, sedangkan dua garis putus-putus merah mewakili batas interval kepercayaan 95% untuk perbedaan rata-rata.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"
Plot Bland-Altman digunakan untuk memvisualisasikan perbedaan pengukuran antara dua instrumen berbeda atau dua teknik pengukuran berbeda. Berguna untuk menentukan seberapa mirip dua instrumen atau teknik dalam mengukur konsep yang sama. Tutorial ini memberikan contoh langkah demi langkah tentang cara membuat plot Bland-Altman di R. Langkah 1: Buat datanya Misalkan seorang ahli biologi menggunakan dua instrumen […]<\/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 Membuat Plot Bland-Altman di R (Langkah demi Langkah)<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara membuat plot Bland-Altman di R, termasuk contoh langkah demi langkah.\" \/>\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\/memudarkan-plot-altman-r\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cara Membuat Plot Bland-Altman di R (Langkah demi Langkah)\" \/>\n<meta property=\"og:description\" content=\"Tutorial ini menjelaskan cara membuat plot Bland-Altman di R, termasuk contoh langkah demi langkah.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/id\/memudarkan-plot-altman-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T23:14:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/fader1.png\" \/>\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\/memudarkan-plot-altman-r\/\",\"url\":\"https:\/\/statorials.org\/id\/memudarkan-plot-altman-r\/\",\"name\":\"Cara Membuat Plot Bland-Altman di R (Langkah demi Langkah)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/id\/#website\"},\"datePublished\":\"2023-07-25T23:14:40+00:00\",\"dateModified\":\"2023-07-25T23:14:40+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/id\/#\/schema\/person\/3d17a1160dd2d052b7c78e502cb9ec81\"},\"description\":\"Tutorial ini menjelaskan cara membuat plot Bland-Altman di R, termasuk contoh langkah demi langkah.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/id\/memudarkan-plot-altman-r\/#breadcrumb\"},\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/id\/memudarkan-plot-altman-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/id\/memudarkan-plot-altman-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/statorials.org\/id\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Cara membuat plot bland-altman di r (langkah demi langkah)\"}]},{\"@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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