{"id":1644,"date":"2023-07-25T13:04:14","date_gmt":"2023-07-25T13:04:14","guid":{"rendered":"https:\/\/statorials.org\/pl\/r-upusc-wiersze-zawierajace-ciag\/"},"modified":"2023-07-25T13:04:14","modified_gmt":"2023-07-25T13:04:14","slug":"r-upusc-wiersze-zawierajace-ciag","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/r-upusc-wiersze-zawierajace-ciag\/","title":{"rendered":"Odp.: jak usun\u0105\u0107 linie zawieraj\u0105ce okre\u015blony ci\u0105g"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby usun\u0105\u0107 linie zawieraj\u0105ce okre\u015blony ci\u0105g w ramce danych w R:<\/span><\/p>\n

 df[!grepl(' string<\/span> ', df$column),]\n<\/strong><\/pre>\n
 W tym samouczku przedstawiono kilka przyk\u0142ad\u00f3w praktycznego zastosowania tej sk\u0142adni z nast\u0119puj\u0105c\u0105 ramk\u0105 danych w j\u0119zyku R:<\/span><\/p>\n
 #create data frame\n<\/span>df <- data. frame<\/span> (team=c('A', 'A', 'A', 'B', 'B', 'C'),\n                 conference=c('East', 'East', 'East', 'West', 'West', 'East'),\n                 dots=c(11, 8, 10, 6, 6, 5))\n\n#view data frame\n<\/span>df\n\n  team conference points\n1 A East 11\n2 A East 8\n3 A East 10\n4 B West 6\n5 B West 6\n6 C East 5\n<\/strong><\/pre>\n
 Przyk\u0142ad 1: Usu\u0144 wiersze zawieraj\u0105ce okre\u015blony ci\u0105g<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak usun\u0105\u0107 wszystkie wiersze z ramki danych zawieraj\u0105ce liter\u0119 \u201eA\u201d w kolumnie zespo\u0142u:<\/span><\/p>\n
 df[!grepl(' A<\/span> ', df$team),]\n\n  team conference points\n4 B West 6\n5 B West 6\n6 C East 5\n<\/strong><\/pre>\n
 Lub mo\u017cemy usun\u0105\u0107 wszystkie wiersze z ramki danych zawieraj\u0105ce \u201eWest\u201d w kolumnie konferencji:<\/span><\/p>\n
 df[!grepl(' West<\/span> ', df$conference),]\n\n  team conference points\n1 A East 11\n2 A East 8\n3 A East 10\n6 C East 5<\/strong><\/pre>\n
 Przyk\u0142ad 2: Usu\u0144 wiersze zawieraj\u0105ce ci\u0105g na li\u015bcie<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak usun\u0105\u0107 wszystkie wiersze z ramki danych zawieraj\u0105ce \u201eA\u201d lub \u201eB\u201d w kolumnie zespo\u0142u:<\/span><\/p>\n
 df[!grepl(' A|B<\/span> ', df$team),]\n\n6 C East 5\n<\/strong><\/pre>\n
 Mogliby\u015bmy r\u00f3wnie\u017c zdefiniowa\u0107 wektor ci\u0105g\u00f3w, a nast\u0119pnie usun\u0105\u0107 wszystkie wiersze w ramce danych zawieraj\u0105ce dowolny ci\u0105g wektora w kolumnie zespo\u0142u:<\/span><\/p>\n
 #define vector of strings\n<\/span>remove <- c(' A<\/span> ', ' B<\/span> ')\n\n#remove rows that contain any string in the vector in the team column<\/span>\ndf[!grepl( paste<\/span> (remove, collapse=' |<\/span> '), df$team),]\n\n6 C East 5<\/strong><\/pre>\n
 Nale\u017cy pami\u0119ta\u0107, \u017ce obie metody prowadz\u0105 do tego samego wyniku.<\/span><\/p>\n
 Dodatkowe zasoby<\/strong><\/span><\/h3>\n
 Jak usun\u0105\u0107 wiersze z niekt\u00f3rymi lub wszystkimi NA w R<\/a>
 Jak usun\u0105\u0107 zduplikowane linie w R<\/a>
 Jak sumowa\u0107 okre\u015blone wiersze w R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby usun\u0105\u0107 linie zawieraj\u0105ce okre\u015blony ci\u0105g w ramce danych w R: df[!grepl(’ string ’, df$column),] W tym samouczku przedstawiono kilka przyk\u0142ad\u00f3w praktycznego zastosowania tej sk\u0142adni z nast\u0119puj\u0105c\u0105 ramk\u0105 danych w j\u0119zyku R: #create data frame df <- data. frame (team=c(’A’, 'A’, 'A’, 'B’, 'B’, 'C’), conference=c(’East’, 'East’, 'East’, 'West’, 'West’, 'East’), […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1644","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nOdp.: Jak usun\u0105\u0107 linie zawieraj\u0105ce okre\u015blony ci\u0105g<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak usun\u0105\u0107 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