{"id":1955,"date":"2023-07-24T07:42:01","date_gmt":"2023-07-24T07:42:01","guid":{"rendered":"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/"},"modified":"2023-07-24T07:42:01","modified_gmt":"2023-07-24T07:42:01","slug":"r-usun-wiersze-z-na-w-jednej-kolumnie","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/","title":{"rendered":"Jak usun\u0105\u0107 wiersze z na w okre\u015blonej kolumnie w r"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 jednej z nast\u0119puj\u0105cych trzech metod, aby usun\u0105\u0107 wiersze z NA w okre\u015blonej kolumnie ramki danych w R:<\/span><\/p>\n

 #use is.na() method<\/span>\ndf[!is. na<\/span> (df$col_name),]\n\n#use subset() method\n<\/span>subset(df, !is. na<\/span> (col_name))\n\n#use tidyr method\n<\/span>library<\/span> (tidyr)\ndf %>% drop_na(col_name)\n<\/strong><\/pre>\n
 Nale\u017cy pami\u0119ta\u0107, \u017ce ka\u017cda z tych metod da takie same wyniki.<\/span><\/p>\n
 Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce zastosowa\u0107 ka\u017cd\u0105 z tych metod z nast\u0119puj\u0105c\u0105 ramk\u0105 danych:<\/span><\/p>\n
 #create data frame<\/span>\ndf <- data. frame<\/span> (a = c(NA, 14, 19, 22, 26),\n                 b = c(14, NA, 9, NA, 5),\n                 c = c(45, 56, 54, 57, 59))\n\n#view data frame<\/span><\/strong>\ndf<\/strong><\/span>\n\nABC\n1 NA 14 45\n2 14 NA 56\n3 19 9 54\n4 22 NA 57\n5 26 5 59\n<\/strong><\/pre>\n
 Metoda 1: Usu\u0144 wiersze z NA za pomoc\u0105 is.na()<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje jak usun\u0105\u0107 wiersze z ramki danych zawieraj\u0105ce warto\u015bci NA w okre\u015blonej kolumnie za pomoc\u0105 metody is.na()<\/strong> :<\/span><\/p>\n
 #remove rows from data frame with NA values in column 'b'<\/span>\ndf[!is. na<\/span> (df$b),]\n\n   ABC\n1 NA 14 45\n3 19 9 54\n5 26 5 59\n<\/strong><\/pre>\n
 Metoda 2: Usu\u0144 wiersze z NA za pomoc\u0105 metody subset()<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje jak usun\u0105\u0107 wiersze z ramki danych zawieraj\u0105ce warto\u015bci NA w okre\u015blonej kolumnie za pomoc\u0105 metody subset()<\/strong> :<\/span><\/p>\n
 #remove rows from data frame with NA values in column 'b'<\/span>\nsubset(df, !is. na<\/span> (b))\n\n   ABC\n1 NA 14 45\n3 19 9 54\n5 26 5 59<\/strong><\/pre>\n
 Metoda 3: Upu\u015b\u0107 wiersze za pomoc\u0105 NA, u\u017cywaj\u0105c drop_na()<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak usun\u0105\u0107 wiersze z ramki danych zawieraj\u0105ce warto\u015bci NA w okre\u015blonej kolumnie przy u\u017cyciu metody drop_na()<\/strong> :<\/span><\/p>\n
 library<\/span> (tidyr)<\/span>\n\n#remove rows from data frame with NA values in column 'b'<\/span>\ndf %>% drop_na(b)\n\n   ABC\n1 NA 14 45\n3 19 9 54\n5 26 5 59<\/strong><\/pre>\n
 Nale\u017cy zauwa\u017cy\u0107, \u017ce ka\u017cda z trzech metod da\u0142a ten sam wynik.<\/span><\/span><\/p>\n
 Uwaga:<\/strong> pe\u0142n\u0105 dokumentacj\u0119 online dotycz\u0105c\u0105 metody drop_na() mo\u017cna znale\u017a\u0107 tutaj<\/a> .<\/span><\/p>\n
 Dodatkowe zasoby<\/strong><\/span><\/h3>\n
 Jak zastosowa\u0107 funkcj\u0119 do ka\u017cdego wiersza ramki danych w R<\/a>
 Jak odzyska\u0107 numery linii w R
 Jak doda\u0107 wiersze do ramki danych w R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 jednej z nast\u0119puj\u0105cych trzech metod, aby usun\u0105\u0107 wiersze z NA w okre\u015blonej kolumnie ramki danych w R: #use is.na() method df[!is. na (df$col_name),] #use subset() method subset(df, !is. na (col_name)) #use tidyr method library (tidyr) df %>% drop_na(col_name) Nale\u017cy pami\u0119ta\u0107, \u017ce ka\u017cda z tych metod da takie same wyniki. Poni\u017csze przyk\u0142ady pokazuj\u0105, jak […]<\/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-1955","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nJak usun\u0105\u0107 wiersze z NA w okre\u015blonej kolumnie w R - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, wraz z przyk\u0142adami, jak usuwa\u0107 wiersze z warto\u015bciami NA w okre\u015blonej kolumnie ramki danych R.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak usun\u0105\u0107 wiersze z NA w okre\u015blonej kolumnie w R - Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, wraz z przyk\u0142adami, jak usuwa\u0107 wiersze z warto\u015bciami NA w okre\u015blonej kolumnie ramki danych R.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T07:42:01+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/\",\"url\":\"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/\",\"name\":\"Jak usun\u0105\u0107 wiersze z NA w okre\u015blonej kolumnie w R - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-24T07:42:01+00:00\",\"dateModified\":\"2023-07-24T07:42:01+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, wraz z przyk\u0142adami, jak usuwa\u0107 wiersze z warto\u015bciami NA w okre\u015blonej kolumnie ramki danych R.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/r-usun-wiersze-z-na-w-jednej-kolumnie\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak usun\u0105\u0107 wiersze z na w okre\u015blonej kolumnie w r\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pl\/#website\",\"url\":\"https:\/\/statorials.org\/pl\/\",\"name\":\"Statorials\",\"description\":\"Tw\u00f3j przewodnik po kompetencjach statystycznych!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\",\"name\":\"Benjamin Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin Anderson\"},\"description\":\"Cze\u015b\u0107, jestem Benjamin i jestem emerytowanym profesorem statystyki, kt\u00f3ry zosta\u0142 oddanym nauczycielem Statorials. 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