<\/p>\n
R’deki stringr<\/a> paketinin str_match()<\/strong> i\u015flevi, bir dizeden e\u015fle\u015fen gruplar\u0131 \u00e7\u0131karmak i\u00e7in kullan\u0131labilir.<\/span><\/p>\n Bu i\u015flev a\u015fa\u011f\u0131daki s\u00f6zdizimini kullan\u0131r:<\/span><\/p>\n str_match(dize, desen) Alt\u0131n:<\/span><\/p>\n A\u015fa\u011f\u0131daki \u00f6rnekler bu fonksiyonun pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6stermektedir<\/span><\/p>\n A\u015fa\u011f\u0131daki kod, bir karakter vekt\u00f6r\u00fcnden e\u015fle\u015fen desenleri \u00e7\u0131karmak i\u00e7in str_match()<\/strong> i\u015flevinin nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n Sonu\u00e7, her sat\u0131r\u0131n e\u015fle\u015fen modeli veya model bulunamazsa bir NA<\/strong> de\u011ferini g\u00f6r\u00fcnt\u00fcledi\u011fi bir matristir.<\/span><\/p>\n \u00d6rne\u011fin:<\/span><\/p>\n Ve benzeri.<\/span><\/p>\n R’de a\u015fa\u011f\u0131daki veri \u00e7er\u00e7evesine sahip oldu\u011fumuzu varsayal\u0131m:<\/span><\/p>\n A\u015fa\u011f\u0131daki kod, veri \u00e7er\u00e7evesine her tak\u0131m ad\u0131 i\u00e7in bir e\u015fle\u015ftirme modeli i\u00e7erebilen veya i\u00e7ermeyen yeni bir s\u00fctun eklemek i\u00e7in str_match()<\/strong> i\u015flevinin nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n Match<\/strong> etiketli yeni s\u00fctun, \u015fablonun tak\u0131m<\/strong> s\u00fctununda olup olmamas\u0131na ba\u011fl\u0131 olarak “avs” veya NA \u015fablonunu i\u00e7erir.<\/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 str_replace nas\u0131l kullan\u0131l\u0131r?<\/a> R’deki stringr paketinin str_match() i\u015flevi, bir dizeden e\u015fle\u015fen gruplar\u0131 \u00e7\u0131karmak i\u00e7in kullan\u0131labilir. Bu i\u015flev a\u015fa\u011f\u0131daki s\u00f6zdizimini kullan\u0131r: str_match(dize, desen) Alt\u0131n: dize: karakter vekt\u00f6r\u00fc model: aranacak model A\u015fa\u011f\u0131daki \u00f6rnekler bu fonksiyonun pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6stermektedir \u00d6rnek 1: str_match’i Vector ile kullan\u0131n A\u015fa\u011f\u0131daki kod, bir karakter vekt\u00f6r\u00fcnden e\u015fle\u015fen desenleri \u00e7\u0131karmak i\u00e7in str_match() i\u015flevinin nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir: library […]<\/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-3335","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\n
<\/strong><\/span><\/p>\n\n
\u00d6rnek 1: str_match’i Vector ile kullan\u0131n<\/strong><\/span><\/h2>\n
library<\/span> (stringr)\n\n#create vector of strings\n<\/span><\/strong><\/span>x <- c('Mavs', 'Cavs', 'Heat', 'Thunder', 'Blazers')\n\n#extract strings that contain 'avs'\n<\/span>str_match(x, pattern=' avs<\/span> ')\n\n [,1] \n[1,] \u201cavs\u201d\n[2,] \u201cavs\u201d\n[3,] NA \n[4,] NA \n[5,] NA \n<\/strong><\/pre>\n\n
\u00d6rnek 2: str_match’i Veri \u00c7er\u00e7evesi ile kullan\u0131n<\/strong><\/span><\/h2>\n
#create data frame\ndf <- data. frame<\/span> (team=c('Mavs', 'Cavs', 'Heat', 'Thunder', 'Blazers'),\n points=c(99, 104, 110, 103, 115))\n\n#view data frame\n<\/span>df\n\n team points\n1 Mavs 99\n2 Cavs 104\n3 Heat 110\n4 Thunder 103\n5 Blazers 115\n<\/span><\/span><\/strong><\/span><\/pre>\n library<\/span> (stringr)\n\n#create new column\ndf$match <- str_match(df$team, pattern=' avs<\/span> ')\n<\/span>\n#view updated data frame\ndf\n\n team points match\n1 Mavs 99 avs\n2 Cavs 104 avs\n3 Heat 110 <NA>\n4 Thunder 103 <NA>\n5 Blazers 115 <NA><\/span><\/span><\/strong><\/span><\/pre>\n Ek kaynaklar<\/strong><\/span><\/h2>\n
R’de str_split nas\u0131l kullan\u0131l\u0131r?<\/a>
R’de str_detect nas\u0131l kullan\u0131l\u0131r?
R’de str_count nas\u0131l kullan\u0131l\u0131r?<\/a>
R’de str_pad nas\u0131l kullan\u0131l\u0131r<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"