<\/p>\n
R’deki dplyr<\/a> paketindeki case_when()<\/strong> i\u015flevi, mevcut de\u011fi\u015fkenlerden yeni de\u011fi\u015fkenler olu\u015fturmak i\u00e7in kullan\u0131labilir.<\/span><\/p>\n Bu i\u015flev a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullan\u0131r:<\/span><\/p>\n TRUE’nun<\/strong> “else” ifadesine e\u015fde\u011fer oldu\u011funu unutmay\u0131n.<\/span><\/p>\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 A\u015fa\u011f\u0131daki kod, de\u011ferleri puan<\/strong> s\u00fctunundan t\u00fcretilen, kalite<\/strong> ad\u0131 verilen yeni bir de\u011fi\u015fkenin nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n Case_when()<\/strong> fonksiyonunun yeni s\u00fctun i\u00e7in de\u011ferleri tam olarak nas\u0131l olu\u015fturdu\u011fu a\u015fa\u011f\u0131da a\u00e7\u0131klanm\u0131\u015ft\u0131r:<\/span><\/p>\n A\u015fa\u011f\u0131daki kod, de\u011ferleri noktalardan<\/strong> ve destek<\/strong> s\u00fctunlar\u0131ndan t\u00fcretilen, kalite<\/strong> ad\u0131 verilen yeni bir de\u011fi\u015fkenin nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n Dizeleri NA de\u011ferlerine a\u00e7\u0131k\u00e7a atamak i\u00e7in is.na()<\/strong> i\u015flevini de kullanabilece\u011fimizi unutmay\u0131n:<\/span><\/span><\/p>\n R’de \u00e7izgiler nas\u0131l d\u00fczenlenir<\/a> R’deki dplyr paketindeki case_when() i\u015flevi, mevcut de\u011fi\u015fkenlerden yeni de\u011fi\u015fkenler olu\u015fturmak i\u00e7in kullan\u0131labilir. Bu i\u015flev a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullan\u0131r: library (dplyr) df %>% mutate (new_var = case_when (var1 < 15 ~ ‘ low ‘, var2 < 25 ~ ‘ med ‘, TRUE ~ ‘ high ‘)) TRUE’nun “else” ifadesine e\u015fde\u011fer oldu\u011funu unutmay\u0131n. A\u015fa\u011f\u0131daki \u00f6rnekler, bu i\u015flevin […]<\/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-1811","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\n library<\/span> (dplyr)\n<\/span>\ndf %>%\n mutate<\/span> (new_var = case_when<\/span> (var1 < 15 ~ ' low<\/span> ',\n var2 < 25 ~ ' med<\/span> ',\n TRUE ~ ' high<\/span> '))\n<\/strong><\/pre>\n #create data frame\n<\/span>df <- data. frame<\/span> (player = c('AJ', 'Bob', 'Chad', 'Dan', 'Eric', 'Frank'),\n position = c('G', 'F', 'F', 'G', 'C', NA),\n points = c(12, 15, 19, 22, 32, NA),\n assists = c(5, 7, 7, 12, 11, NA))\n\n#view data frame\n<\/span>df\n\n player position points assists\n1 AJ G 12 5\n2 Bob F 15 7\n3 Chad F 19 7\n4 Dan G 22 12\n5 Eric C 32 11\n6 Frank NA NA NA<\/strong><\/pre>\n \u00d6rnek 1: Mevcut bir de\u011fi\u015fkenden yeni bir de\u011fi\u015fken olu\u015fturma<\/strong><\/span><\/h3>\n
df %>%\nmutate<\/span> (quality = case_when<\/span> (points > 20 ~ ' high<\/span> ',\n points > 15 ~ ' med<\/span> ',\n TRUE ~ ' low<\/span> ' ))\n\n player position points assists quality\n1 AJ G 12 5 low\n2 Bob F 15 7 low\n3 Chad F 19 7 med\n4 Dan G 22 12 high\n5 Eric C 32 11 high\n6 Frank NA NA NA low\n<\/strong><\/pre>\n\n
\u00d6rnek 2: Birden \u00e7ok de\u011fi\u015fkenden yeni bir de\u011fi\u015fken olu\u015fturma<\/strong><\/span><\/h3>\n
df %>%\nmutate<\/span> (quality = case_when<\/span> (points > 15 & assists > 10 ~ ' great<\/span> ',\n points > 15 & assists > 5 ~ ' good<\/span> ',\n TRUE ~ ' average<\/span> ' ))\n\n player position points assists quality\n1 AJ G 12 5 average\n2 Bob F 15 7 average\n3 Chad F 19 7 good\n4 Dan G 22 12 great\n5 Eric C 32 11 great\n6 Frank NA NA NA average\n<\/strong><\/pre>\n df %>%\nmutate<\/span> (quality = case_when<\/span> (is. na<\/span> (points) ~ ' missing<\/span> ',\n points > 15 & assists > 10 ~ ' great<\/span> ',\n points > 15 & assists > 5 ~ ' good<\/span> ',\n TRUE ~ ' average<\/span> ' ))\n\n player position points assists quality\n1 AJ G 12 5 average\n2 Bob F 15 7 average\n3 Chad F 19 7 good\n4 Dan G 22 12 great\n5 Eric C 32 11 great\n6 Frank NA NA NA missing<\/strong><\/pre>\n Ek kaynaklar<\/strong><\/span><\/h3>\n
R’de grup ba\u015f\u0131na g\u00f6zlemler nas\u0131l say\u0131l\u0131r?<\/a>
R’de belirli bir dize i\u00e7eren sat\u0131rlar nas\u0131l filtrelenir<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"