<\/p>\n
De\u011ferleri mevcut bir s\u00fctunun de\u011ferlerine dayal\u0131 olan bir veri \u00e7er\u00e7evesinde yeni bir s\u00fctun olu\u015fturmak i\u00e7in genellikle R’de bir ifelse<\/strong> ifadesi kullanmak isteyebilirsiniz.<\/span><\/span><\/p>\n Bunu yapmak i\u00e7in a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullanabilirsiniz:<\/span><\/p>\n Ancak bir s\u00fctunda NA de\u011ferleri mevcutsa yeni s\u00fctundaki de\u011ferler otomatik olarak NA olacakt\u0131r.<\/span><\/p>\n Bunu \u00f6nlemek i\u00e7in !is.na()<\/strong> fonksiyonunu a\u015fa\u011f\u0131daki gibi kullanabilirsiniz:<\/span><\/p>\n A\u015fa\u011f\u0131daki \u00f6rnek, bu s\u00f6zdiziminin pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir.<\/span><\/p>\n R’de \u00e7e\u015fitli basketbol oyuncular\u0131 hakk\u0131nda bilgi i\u00e7eren a\u015fa\u011f\u0131daki veri \u00e7er\u00e7evesine sahip oldu\u011fumuzu varsayal\u0131m:<\/span><\/p>\n \u015eimdi s\u0131n\u0131f<\/strong> ad\u0131nda a\u015fa\u011f\u0131daki de\u011ferleri alan yeni bir s\u00fctun olu\u015fturmaya \u00e7al\u0131\u015ft\u0131\u011f\u0131m\u0131z\u0131 varsayal\u0131m:<\/span><\/p>\n A\u015fa\u011f\u0131daki kod bunun nas\u0131l yap\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n Conf<\/strong> s\u00fctunundaki kar\u015f\u0131l\u0131k gelen de\u011fer NA’ya e\u015fit oldu\u011fundan, 2. sat\u0131rdaki s\u0131n\u0131f<\/strong> de\u011ferinin NA’ya e\u015fit oldu\u011funu unutmay\u0131n.<\/span><\/p>\n Bunu \u00f6nlemek i\u00e7in !is.na()<\/strong> fonksiyonunu \u015fu \u015fekilde kullanabiliriz:<\/span><\/p>\n 2. sat\u0131rdaki Class<\/strong> de\u011ferinin art\u0131k NA yerine “Di\u011fer”e e\u015fit oldu\u011funu unutmay\u0131n.<\/span><\/p>\n !is.na()<\/strong> fonksiyonunu kullanarak, yeni s\u0131n\u0131f<\/strong> s\u00fctunundaki de\u011ferin ‘West_Player’ olabilmesi i\u00e7in conf<\/strong> s\u00fctunundaki de\u011ferin ‘West’e e\u015fit olmas\u0131 ve<\/em> NA’ya e\u015fit olmamas\u0131 gerekti\u011fini belirttik.<\/span><\/p>\n A\u015fa\u011f\u0131daki e\u011fitimlerde R’de di\u011fer ortak g\u00f6revlerin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fi a\u00e7\u0131klanmaktad\u0131r:<\/span><\/p>\n R’de yuvalanm\u0131\u015f If Else ifadesi nas\u0131l yaz\u0131l\u0131r?<\/a> De\u011ferleri mevcut bir s\u00fctunun de\u011ferlerine dayal\u0131 olan bir veri \u00e7er\u00e7evesinde yeni bir s\u00fctun olu\u015fturmak i\u00e7in genellikle R’de bir ifelse ifadesi kullanmak isteyebilirsiniz. Bunu yapmak i\u00e7in a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullanabilirsiniz: df$new_column<- ifelse(df$col1 == ‘ A ‘, ‘ val_if_true ‘, ‘ val_if_false ‘) Ancak bir s\u00fctunda NA de\u011ferleri mevcutsa yeni s\u00fctundaki de\u011ferler otomatik olarak NA olacakt\u0131r. Bunu […]<\/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-3872","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\n df$new_column<- ifelse(df$col1 ==<\/span> ' A<\/span> ', ' val_if_true<\/span> ', ' val_if_false<\/span> ')<\/strong><\/pre>\n df$new_column<- ifelse(df$col1 ==<\/span> ' A<\/span> ' &<\/span> !is. na<\/span> (df$col1)<\/span> , ' val_if_true<\/span> ', ' val_if_false<\/span> ')<\/strong><\/pre>\n \u00d6rnek: NA’y\u0131 R’deki ifelse ifadesine dahil edin<\/strong><\/span><\/h2>\n
#create data frame<\/span>\ndf <- data. frame<\/span> (player=c('A', 'B', 'C', 'D', 'E', 'F'),\n conf=c('West', NA, 'West', 'East', 'East', 'East'),\n points=c(30, 35, 11, 18, 14, NA))\n\n#view data frame\n<\/span>df\n\n player conf points\n1 A West 30\n2 B <NA> 35\n3 C West 11\n4 D East 18\n5 E East 14\n6 F East NA\n<\/strong><\/pre>\n\n
#create new column called 'class'\n<\/span>df$class <- ifelse(df$conf ==<\/span> ' West<\/span> ', ' West_Player<\/span> ', ' Other<\/span> ')\n\n#view updated data frame\n<\/span>df\n\n player conf points class\n1 A West 30 West_Player\n2 B <NA> 35 <NA>\n3 C West 11 West_Player\n4 D East 18 Other\n5 E East 14 Other\n6 F East NA Other<\/strong><\/pre>\n #create new column called 'class'\n<\/span>df$class <- ifelse(df$conf ==<\/span> ' West<\/span> ' & !is. na<\/span> (df$conf), ' West_Player<\/span> ', ' Other<\/span> ')\n\n#view updated data frame\n<\/span>df\n\n player conf points class\n1 A West 30 West_Player\n2 B <NA> 35 Other\n3 C West 11 West_Player\n4 D East 18 Other\n5 E East 14 Other\n6 F East NA Other\n<\/strong><\/pre>\n Ek kaynaklar<\/span><\/strong><\/span><\/h2>\n
R’de bir vaka ifadesi nas\u0131l yaz\u0131l\u0131r<\/a>
R’de veri \u00e7er\u00e7evesine birden fazla s\u00fctun nas\u0131l eklenir<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"