{"id":1891,"date":"2023-07-24T14:03:20","date_gmt":"2023-07-24T14:03:20","guid":{"rendered":"https:\/\/statorials.org\/tr\/rde-dar-fonksiyon\/"},"modified":"2023-07-24T14:03:20","modified_gmt":"2023-07-24T14:03:20","slug":"rde-dar-fonksiyon","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/rde-dar-fonksiyon\/","title":{"rendered":"R'de dar fonksiyon nas\u0131l kullan\u0131l\u0131r (\u00f6rneklerle)"},"content":{"rendered":"

<\/p>\n

\n

Bir veri \u00e7er\u00e7evesindeki sat\u0131r say\u0131s\u0131n\u0131 saymak i\u00e7in R’deki nrow()<\/strong> i\u015flevini kullanabilirsiniz:<\/span><\/p>\n

 #count number of rows in data frame<\/span>\nnrow(df)<\/strong><\/pre>\n
 A\u015fa\u011f\u0131daki \u00f6rnekler, bu i\u015flevin pratikte a\u015fa\u011f\u0131daki veri \u00e7er\u00e7evesiyle nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
 #create data frame<\/span>\ndf <- data. frame<\/span> (x=c(1, 2, 3, 3, 5, NA),\n                 y=c(8, 14, NA, 25, 29, NA)) \n\n#view data frame\n<\/span>df\n\n   xy\n1 1 8\n2 2 14\n3 3 NA\n4 3 25\n5 5 29\n6 NA NA\n<\/strong><\/pre>\n
 \u00d6rnek 1: Veri \u00e7er\u00e7evesindeki sat\u0131rlar\u0131 sayma<\/strong><\/span><\/h3>\n
 A\u015fa\u011f\u0131daki kod, veri \u00e7er\u00e7evesindeki toplam sat\u0131r say\u0131s\u0131n\u0131n nas\u0131l say\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
 #count total rows in data frame<\/span>\nnrow(df)\n\n[1] 6\n<\/strong><\/pre>\n
 Toplamda 6<\/strong> sat\u0131r bulunmaktad\u0131r.<\/span><\/p>\n
 \u00d6rnek 2: Veri \u00e7er\u00e7evesindeki ko\u015fulu i\u00e7eren sat\u0131rlar\u0131 sayma<\/strong><\/span><\/h3>\n
 A\u015fa\u011f\u0131daki kod, “x” s\u00fctunundaki de\u011ferin 3’ten b\u00fcy\u00fck oldu\u011fu ve bo\u015f olmad\u0131\u011f\u0131 sat\u0131r say\u0131s\u0131n\u0131n nas\u0131l say\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
 #count total rows in data frame where 'x' is greater than 3 and not blank<\/span>\nnrow(df[df$x>3 & !is. na<\/span> (df$x), ])\n\n[1] 1<\/strong><\/pre>\n
 Veri \u00e7er\u00e7evesinde bu ko\u015fulu sa\u011flayan 1<\/strong> sat\u0131r vard\u0131r.<\/span><\/p>\n
 \u00d6rnek 3: Eksik de\u011ferleri olmayan sat\u0131rlar\u0131 sayma<\/strong><\/span><\/h3>\n
 A\u015fa\u011f\u0131daki kod, veri \u00e7er\u00e7evesinde eksik de\u011fer bulunmayan sat\u0131rlar\u0131n say\u0131s\u0131n\u0131 saymak i\u00e7incomplete.cases ()<\/a> i\u015flevinin nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
 #count total rows in data frame with no missing values in any column<\/span>\nnrow(df[complete. cases<\/span> (df), ])\n\n[1] 4<\/strong><\/pre>\n
 Veri \u00e7er\u00e7evesinde eksik de\u011fer bulunmayan 4<\/strong> sat\u0131r bulunmaktad\u0131r.<\/span><\/p>\n
 \u00d6rnek 4: Belirli bir s\u00fctunda eksik de\u011ferleri olan sat\u0131rlar\u0131 say\u0131n<\/strong><\/span><\/h3>\n
 A\u015fa\u011f\u0131daki kod, “y” s\u00fctununda eksik de\u011fere sahip sat\u0131rlar\u0131n say\u0131s\u0131n\u0131 \u00f6zel olarak saymak i\u00e7in is.na()<\/a> i\u015flevinin nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
 #count total rows in with missing value in 'y' column<\/span>\nnrow(df[is. na<\/span> (df$y), ])\n\n[1] 2<\/strong><\/pre>\n
 “y” s\u00fctununda eksik de\u011ferleri olan 2<\/strong> sat\u0131r var.<\/span><\/p>\n
 Ek kaynaklar<\/strong><\/span><\/h3>\n
 R’de rowSums() i\u015flevi nas\u0131l kullan\u0131l\u0131r?<\/a>
 R’deki veri \u00e7er\u00e7evesinin her sat\u0131r\u0131na bir i\u015flev nas\u0131l uygulan\u0131r?<\/a>
 Ko\u015fula ba\u011fl\u0131 olarak R’deki veri \u00e7er\u00e7evesinden sat\u0131rlar nas\u0131l kald\u0131r\u0131l\u0131r<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Bir veri \u00e7er\u00e7evesindeki sat\u0131r say\u0131s\u0131n\u0131 saymak i\u00e7in R’deki nrow() i\u015flevini kullanabilirsiniz: #count number of rows in data frame nrow(df) A\u015fa\u011f\u0131daki \u00f6rnekler, bu i\u015flevin pratikte a\u015fa\u011f\u0131daki veri \u00e7er\u00e7evesiyle nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir: #create data frame df <- data. frame (x=c(1, 2, 3, 3, 5, NA), y=c(8, 14, NA, 25, 29, NA)) #view data frame df xy 1 […]<\/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":[],"class_list":["post-1891","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\nR'de dar fonksiyon nas\u0131l kullan\u0131l\u0131r (\u00f6rneklerle) \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"Bu e\u011fitimde, R'de nrow() i\u015flevinin nas\u0131l 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