<\/p>\n
Case ifadesi,<\/strong> ko\u015fullar aras\u0131nda ge\u00e7i\u015f yapan ve ilk ko\u015ful kar\u015f\u0131land\u0131\u011f\u0131nda bir de\u011fer d\u00f6nd\u00fcren bir ifade t\u00fcr\u00fcd\u00fcr.<\/span><\/p>\n R’de bir case ifadesini uygulaman\u0131n en kolay yolu dplyr<\/strong> paketindeki case_when()<\/strong> i\u015flevini kullanmakt\u0131r:<\/span><\/p>\n Bu \u00f6zel i\u015flev, col1<\/strong> adl\u0131 s\u00fctundaki de\u011fere bakar ve \u015funu d\u00f6nd\u00fcr\u00fcr:<\/span><\/p>\n TRUE’nun<\/strong> “else” ifadesine e\u015fde\u011fer oldu\u011funu unutmay\u0131n.<\/span><\/p>\n A\u015fa\u011f\u0131daki \u00f6rnekte bu fonksiyonun pratikte nas\u0131l kullan\u0131laca\u011f\u0131 g\u00f6sterilmektedir.<\/span><\/p>\n R’de a\u015fa\u011f\u0131daki veri \u00e7er\u00e7evesine sahip oldu\u011fumuzu varsayal\u0131m:<\/span><\/p>\n De\u011ferleri puan<\/strong> s\u00fctunundaki de\u011ferlerle belirlenen, s\u0131n\u0131f<\/strong> ad\u0131 verilen yeni bir s\u00fctun olu\u015fturan bir case ifadesi yazmak i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini kullanabiliriz:<\/span><\/p>\n Case ifadesi puan<\/strong> s\u00fctunundaki de\u011fere bakt\u0131 ve \u015funu verdi:<\/span><\/p>\n Yeni s\u00fctuna class<\/strong> ad\u0131 verilir, \u00e7\u00fcnk\u00fc bu , mutate()<\/strong> i\u015flevinde belirtti\u011fimiz add\u0131r.<\/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 birden fazla ko\u015fulla If ifadesi nas\u0131l kullan\u0131l\u0131r? Case ifadesi, ko\u015fullar aras\u0131nda ge\u00e7i\u015f yapan ve ilk ko\u015ful kar\u015f\u0131land\u0131\u011f\u0131nda bir de\u011fer d\u00f6nd\u00fcren bir ifade t\u00fcr\u00fcd\u00fcr. R’de bir case ifadesini uygulaman\u0131n en kolay yolu dplyr paketindeki case_when() i\u015flevini kullanmakt\u0131r: library (dplyr) df %>% mutate(new_column = case_when( col1 < 9 ~ ‘ value1 ‘, col1 < 12 ~ ‘ value2 ‘, col1 < 15 ~ ‘ […]<\/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-3476","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\n library<\/span> (dplyr)\n\ndf %>% \n mutate(new_column = case_when(\n col1 < 9 ~ ' value1<\/span> ',\n col1 < 12 ~ ' value2<\/span> ',\n col1 < 15 ~ ' value3<\/span> ',\n TRUE<\/span> ~ ' Great<\/span> '))\n<\/strong><\/pre>\n\n
\u00d6rnek: R’deki case ifadesi<\/span><\/strong><\/h2>\n
#create data frame\n<\/span>df <- data. frame<\/span> (player=c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10),\n points=c(6, 8, 9, 9, 12, 14, 15, 17, 19, 22))\n\n#view data frame\n<\/span>df\n\n player points\n1 1 6\n2 2 8\n3 3 9\n4 4 9\n5 5 12\n6 6 14\n7 7 15\n8 8 17\n9 9 19\n10 10 22<\/strong><\/pre>\n library<\/span> (dplyr)<\/span>\n\n#create new column using case statement\n<\/span>df %>% \n mutate(class = case_when(\n points < 9 ~ ' Bad<\/span> ',\n points < 12 ~ ' OK<\/span> ',\n points < 15 ~ ' Good<\/span> ',\n TRUE<\/span> ~ ' Great<\/span> '))\n\n player points class\n1 1 6 Bad\n2 2 8 Bad\n3 3 9 OK\n4 4 9 OK\n5 5 12 Good\n6 6 14 Good\n7 7 15 Great\n8 8 17 Great\n9 9 19 Great\n10 10 22 Great<\/strong><\/pre>\n\n
Ek kaynaklar<\/strong><\/span><\/h2>\n
R’de i\u00e7 i\u00e7e ge\u00e7mi\u015f If Else ifadesi nas\u0131l yaz\u0131l\u0131r?<\/a>
R’de ilk tryCatch() fonksiyonunuzu nas\u0131l yazars\u0131n\u0131z?<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"