{"id":3872,"date":"2023-07-15T01:21:29","date_gmt":"2023-07-15T01:21:29","guid":{"rendered":"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/"},"modified":"2023-07-15T01:21:29","modified_gmt":"2023-07-15T01:21:29","slug":"r-liczy-na-w-kazdej-kolumnie","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/","title":{"rendered":"Odp.: policz liczb\u0119 warto\u015bci na w ka\u017cdej kolumnie"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cych metod, aby policzy\u0107 liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie ramki danych w R:<\/span><\/p>\n<p> <strong><span style=\"color: #000000;\">Metoda 1: Policz warto\u015bci NA w ka\u017cdej kolumnie, u\u017cywaj\u0105c podstawy R<\/span><\/strong><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>sapply(df, <span style=\"color: #008000;\">function<\/span> (x) sum(is. <span style=\"color: #3366ff;\">na<\/span> (x)))\n<\/strong><\/pre>\n<p> <strong><span style=\"color: #000000;\">Metoda 2: Policz warto\u015bci NA w ka\u017cdej kolumnie za pomoc\u0105 dplyr<\/span><\/strong><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\ndf %&gt;% summarise(across(everything(), ~ sum(is. <span style=\"color: #3366ff;\">na<\/span> (.))))<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Poni\u017csze przyk\u0142ady pokazuj\u0105, jak u\u017cywa\u0107 ka\u017cdej metody z nast\u0119puj\u0105c\u0105 ramk\u0105 danych w R:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame\n<\/span>df &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (team=c('A', 'B', 'C', 'D', 'E'),\n                 points=c(99, 90, 86, 88, NA),\n                 assists=c(33, NA, NA, 39, 34),\n                 rebounds=c(30, 28, 24, 24, 28))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  team points assists rebounds\n1 A 99 33 30\n2 B 90 NA 28\n3 C 86 NA 24\n4 D 88 39 24\n5 E NA 34 28\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: Policz warto\u015bci NA w ka\u017cdej kolumnie, u\u017cywaj\u0105c podstawy R<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak policzy\u0107 liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie za pomoc\u0105 funkcji bazowej R <strong>sapply()<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count NA values in each column\n<\/span>sapply(df, <span style=\"color: #008000;\">function<\/span> (x) sum(is. <span style=\"color: #3366ff;\">na<\/span> (x)))\n\n    team points assists rebounds \n       0 1 2 0<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Kolumna <strong>zespo\u0142u<\/strong> ma warto\u015bci 0 NA.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna <strong>punkt\u00f3w<\/strong> ma 1 warto\u015b\u0107 NA.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna <strong>asyst<\/strong> zawiera 2 warto\u015bci NA.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna <strong>\u201eodbicia\u201d<\/strong> ma warto\u015bci 0 NA.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>Uwaga<\/strong> : Funkcji <strong>sapply()<\/strong> mo\u017cna u\u017cy\u0107 do zastosowania funkcji do ka\u017cdej kolumny w ramce danych. W tym przyk\u0142adzie stosujemy funkcj\u0119, kt\u00f3ra zlicza ca\u0142kowit\u0105 liczb\u0119 element\u00f3w r\u00f3wn\u0105 NA.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2: Policz warto\u015bci NA w ka\u017cdej kolumnie za pomoc\u0105 dplyr<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak policzy\u0107 liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie za pomoc\u0105 funkcji <strong>podsumowania()<\/strong> z pakietu <a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#count NA values in each column\n<\/span>sapply(df, <span style=\"color: #008000;\">function<\/span> (x) sum(is. <span style=\"color: #3366ff;\">na<\/span> (x)))\n\n    team points assists rebounds \n       0 1 2 0<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Kolumna <strong>zespo\u0142u<\/strong> ma warto\u015bci 0 NA.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna <strong>punkt\u00f3w<\/strong> ma 1 warto\u015b\u0107 NA.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna <strong>asyst<\/strong> zawiera 2 warto\u015bci NA.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Kolumna <strong>\u201eodbicia\u201d<\/strong> ma warto\u015bci 0 NA.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Wyniki te odpowiadaj\u0105 wynikom z poprzedniego przyk\u0142adu.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Uwaga<\/strong> : Metoda dplyr jest zwykle szybsza ni\u017c podstawowa metoda R podczas pracy z bardzo du\u017cymi ramkami danych.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe zadania w j\u0119zyku R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/na-pominac-w-r\/\" target=\"_blank\" rel=\"noopener\">Jak u\u017cywa\u0107 na.omit w R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/uzupe\u0142nij-r-przypadkow\/\" target=\"_blank\" rel=\"noopener\">Jak u\u017cywa\u0107 kompletnych.cases w R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/usun-puste-linie-w-r\/\" target=\"_blank\" rel=\"noopener\">Jak usun\u0105\u0107 puste linie z ramki danych w R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cych metod, aby policzy\u0107 liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie ramki danych w R: Metoda 1: Policz warto\u015bci NA w ka\u017cdej kolumnie, u\u017cywaj\u0105c podstawy R sapply(df, function (x) sum(is. na (x))) Metoda 2: Policz warto\u015bci NA w ka\u017cdej kolumnie za pomoc\u0105 dplyr library (dplyr) df %&gt;% summarise(across(everything(), ~ sum(is. na (.)))) Poni\u017csze przyk\u0142ady [&hellip;]<\/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-3872","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Odp.: policz liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie \u2013 Statologia<\/title>\n<meta name=\"description\" content=\"W tym poradniku wyja\u015bniono, jak policzy\u0107 warto\u015bci NA w ka\u017cdej kolumnie ramki danych w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adami.\" \/>\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-liczy-na-w-kazdej-kolumnie\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Odp.: policz liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie \u2013 Statologia\" \/>\n<meta property=\"og:description\" content=\"W tym poradniku wyja\u015bniono, jak policzy\u0107 warto\u015bci NA w ka\u017cdej kolumnie ramki danych w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adami.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-15T01:21:29+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-liczy-na-w-kazdej-kolumnie\/\",\"url\":\"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/\",\"name\":\"Odp.: policz liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie \u2013 Statologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-15T01:21:29+00:00\",\"dateModified\":\"2023-07-15T01:21:29+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym poradniku wyja\u015bniono, jak policzy\u0107 warto\u015bci NA w ka\u017cdej kolumnie ramki danych w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adami.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Odp.: policz liczb\u0119 warto\u015bci na w ka\u017cdej kolumnie\"}]},{\"@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. Dzi\u0119ki bogatemu do\u015bwiadczeniu i wiedzy specjalistycznej w dziedzinie statystyki ch\u0119tnie dziel\u0119 si\u0119 swoj\u0105 wiedz\u0105, aby wzmocni\u0107 pozycj\u0119 uczni\u00f3w za po\u015brednictwem Statorials. Wiedzie\u0107 wi\u0119cej\",\"sameAs\":[\"https:\/\/statorials.org\/pl\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Odp.: policz liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie \u2013 Statologia","description":"W tym poradniku wyja\u015bniono, jak policzy\u0107 warto\u015bci NA w ka\u017cdej kolumnie ramki danych w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adami.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/","og_locale":"pl_PL","og_type":"article","og_title":"Odp.: policz liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie \u2013 Statologia","og_description":"W tym poradniku wyja\u015bniono, jak policzy\u0107 warto\u015bci NA w ka\u017cdej kolumnie ramki danych w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adami.","og_url":"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/","og_site_name":"Statorials","article_published_time":"2023-07-15T01:21:29+00:00","author":"Benjamin Anderson","twitter_card":"summary_large_image","twitter_misc":{"Napisane przez":"Benjamin Anderson","Szacowany czas czytania":"2 minuty"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/","url":"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/","name":"Odp.: policz liczb\u0119 warto\u015bci NA w ka\u017cdej kolumnie \u2013 Statologia","isPartOf":{"@id":"https:\/\/statorials.org\/pl\/#website"},"datePublished":"2023-07-15T01:21:29+00:00","dateModified":"2023-07-15T01:21:29+00:00","author":{"@id":"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965"},"description":"W tym poradniku wyja\u015bniono, jak policzy\u0107 warto\u015bci NA w ka\u017cdej kolumnie ramki danych w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adami.","breadcrumb":{"@id":"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/#breadcrumb"},"inLanguage":"pl-PL","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/pl\/r-liczy-na-w-kazdej-kolumnie\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Dom","item":"https:\/\/statorials.org\/pl\/"},{"@type":"ListItem","position":2,"name":"Odp.: policz liczb\u0119 warto\u015bci na w ka\u017cdej kolumnie"}]},{"@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. Dzi\u0119ki bogatemu do\u015bwiadczeniu i wiedzy specjalistycznej w dziedzinie statystyki ch\u0119tnie dziel\u0119 si\u0119 swoj\u0105 wiedz\u0105, aby wzmocni\u0107 pozycj\u0119 uczni\u00f3w za po\u015brednictwem Statorials. Wiedzie\u0107 wi\u0119cej","sameAs":["https:\/\/statorials.org\/pl"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/posts\/3872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/comments?post=3872"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/posts\/3872\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/media?parent=3872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/categories?post=3872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/tags?post=3872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}