{"id":2902,"date":"2023-07-20T04:29:07","date_gmt":"2023-07-20T04:29:07","guid":{"rendered":"https:\/\/statorials.org\/tr\/strptime-strftime-r\/"},"modified":"2023-07-20T04:29:07","modified_gmt":"2023-07-20T04:29:07","slug":"strptime-strftime-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/strptime-strftime-r\/","title":{"rendered":"R'de strptime ve strftime i\u015flevleri nas\u0131l kullan\u0131l\u0131r?"},"content":{"rendered":"

<\/p>\n

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Karakter ve zaman nesneleri aras\u0131nda d\u00f6n\u00fc\u015f\u00fcm yapmak i\u00e7in R’deki strptime<\/strong> ve strftime<\/strong> i\u015flevlerini kullanabilirsiniz.<\/span><\/p>\n

strptime<\/strong> i\u015flevi, karakterleri zaman nesnelerine d\u00f6n\u00fc\u015ft\u00fcr\u00fcr ve a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullan\u0131r:<\/span><\/p>\n

 strptime(character_object, format=\" %Y-%m-%d<\/span> \")<\/span><\/span><\/strong><\/pre>\n
 strftime<\/strong> i\u015flevi, zaman nesnelerini karakterlere d\u00f6n\u00fc\u015ft\u00fcr\u00fcr ve a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullan\u0131r:<\/span><\/p>\n
 strftime(time_object)<\/span><\/span><\/strong><\/pre>\n
 A\u015fa\u011f\u0131daki \u00f6rnekler her bir fonksiyonun pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6stermektedir.<\/span><\/p>\n
 \u00d6rnek 1: R’de strptime i\u015flevini kullan\u0131n<\/strong><\/span><\/h3>\n
 R’de a\u015fa\u011f\u0131daki karakter vekt\u00f6r\u00fcne sahip oldu\u011fumuzu varsayal\u0131m:<\/span><\/p>\n
 #create character vector\n<\/span>char_data <- c(\"2022-01-01\", \"2022-01-25\", \"2022-02-14\", \"2022-03-19\")\n\n#view class of vector\n<\/span>class(char_data)\n\n[1] \u201ccharacter\u201d\n<\/span><\/span><\/strong><\/pre>\n
 Karakterleri zaman nesnelerine d\u00f6n\u00fc\u015ft\u00fcrmek i\u00e7in strptime<\/strong> i\u015flevini kullanabiliriz:<\/span><\/p>\n
 #convert characters to time objects\n<\/span>time_data <- strptime(char_data, format=\" %Y-%m-%d<\/span> \")\n\n#view new vector\n<\/span>time_data\n\n[1] \"2022-01-01 UTC\" \"2022-01-25 UTC\" \"2022-02-14 UTC\" \"2022-03-19 UTC\"\n\n#view class of new vector\n<\/span>class(time_data)\n\n[1] \u201cPOSIXlt\u201d \u201cPOSIXt\u201d\n<\/span><\/span><\/strong><\/pre>\n
 Karakterlerin zamansal nesnelere d\u00f6n\u00fc\u015ft\u00fcr\u00fcld\u00fc\u011f\u00fc g\u00f6r\u00fcl\u00fcyor.<\/span><\/p>\n
 Karakterleri belirli bir zaman dilimine sahip zaman nesnelerine d\u00f6n\u00fc\u015ft\u00fcrmek i\u00e7in tz<\/strong> arg\u00fcman\u0131n\u0131 da kullanabilece\u011fimizi unutmay\u0131n.<\/span><\/p>\n
 \u00d6rne\u011fin, karakterleri Do\u011fu saat dilimindeki zaman nesnelerine d\u00f6n\u00fc\u015ft\u00fcrmek i\u00e7in “EST”yi belirtebiliriz:<\/span><\/p>\n
 #convert characters to time objects in EST time zone\n<\/span>time_data <- strptime(char_data, format=\" %Y-%m-%d<\/span> \", tz=\" IS<\/span> \")\n\n#view new vector\n<\/span>time_data\n\n[1] \"2022-01-01 EST\" \"2022-01-25 EST\" \"2022-02-14 EST\" \"2022-03-19 EST\"\n<\/span><\/span><\/strong><\/pre>\n
 Zaman nesnelerinin her birinin art\u0131k Do\u011fu saat dilimini belirten EST<\/strong> ile bitti\u011fini unutmay\u0131n.<\/span><\/p>\n
 \u00d6rnek 2: R’de strftime i\u015flevini kullan\u0131n<\/strong><\/span><\/h3>\n
 R’de a\u015fa\u011f\u0131daki zamansal nesneler vekt\u00f6r\u00fcne sahip oldu\u011fumuzu varsayal\u0131m:<\/span><\/p>\n
 #create vector of time objects\n<\/span>time_data <- as. POSIXct<\/span> (c(\"2022-01-01\", \"2022-01-25\", \"2022-02-14\"))\n\n#view class of vector\n<\/span>class(time_data)\n\n[1] \u201cPOSIXct\u201d \u201cPOSIXt\u201d\n<\/span><\/span><\/strong><\/pre>\n
 Zaman nesnelerini karakterlere d\u00f6n\u00fc\u015ft\u00fcrmek i\u00e7in strftime<\/strong> i\u015flevini kullanabiliriz:<\/span><\/p>\n
 #convert time objects to characters\n<\/span>char_data <- strftime(time_data)\n\n#view new vector\n<\/span>char_data\n\n[1] \"2022-01-01\" \"2022-01-25\" \"2022-02-14\"\n\n#view class of new vector\n<\/span>class(char_data)\n\n[1] \u201ccharacter\u201d\n<\/span><\/span><\/strong><\/pre>\n
 Zamansal nesnelerin karakterlere d\u00f6n\u00fc\u015ft\u00fcr\u00fcld\u00fc\u011f\u00fcn\u00fc g\u00f6r\u00fcyoruz.<\/span><\/p>\n
 Ek kaynaklar<\/strong><\/span><\/h3>\n
 A\u015fa\u011f\u0131daki e\u011fitimlerde R’deki di\u011fer yayg\u0131n i\u015flevlerin nas\u0131l kullan\u0131laca\u011f\u0131 a\u00e7\u0131klanmaktad\u0131r:<\/span><\/p>\n
 R’de tabulate() i\u015flevi nas\u0131l kullan\u0131l\u0131r?<\/a>
 R’de split() i\u015flevi nas\u0131l kullan\u0131l\u0131r?<\/a>
 R’de match() i\u015flevi nas\u0131l kullan\u0131l\u0131r?<\/a>
 R’de replikasyon () i\u015flevi nas\u0131l kullan\u0131l\u0131r?<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Karakter ve zaman nesneleri aras\u0131nda d\u00f6n\u00fc\u015f\u00fcm yapmak i\u00e7in R’deki strptime ve strftime i\u015flevlerini kullanabilirsiniz. strptime i\u015flevi, karakterleri zaman nesnelerine d\u00f6n\u00fc\u015ft\u00fcr\u00fcr ve a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullan\u0131r: strptime(character_object, format=” %Y-%m-%d “) strftime i\u015flevi, zaman nesnelerini karakterlere d\u00f6n\u00fc\u015ft\u00fcr\u00fcr ve a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullan\u0131r: strftime(time_object) A\u015fa\u011f\u0131daki \u00f6rnekler her bir fonksiyonun pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6stermektedir. \u00d6rnek 1: R’de strptime i\u015flevini […]<\/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-2902","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\nR - 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