{"id":3281,"date":"2023-07-18T07:35:38","date_gmt":"2023-07-18T07:35:38","guid":{"rendered":"https:\/\/statorials.org\/pl\/dplyr-przez\/"},"modified":"2023-07-18T07:35:38","modified_gmt":"2023-07-18T07:35:38","slug":"dplyr-przez","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/dplyr-przez\/","title":{"rendered":"Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Mo\u017cesz u\u017cy\u0107 funkcjicross <a href=\"https:\/\/dplyr.tidyverse.org\/reference\/across.html\" target=\"_blank\" rel=\"noopener\">()<\/a> z pakietu <a href=\"https:\/\/dplyr.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">dplyr<\/a> w R, aby zastosowa\u0107 transformacj\u0119 do wielu kolumn.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Istnieje niezliczona ilo\u015b\u0107<\/span> <span style=\"color: #000000;\">sposob\u00f3w wykorzystania tej funkcji, ale poni\u017csze metody ilustruj\u0105 kilka typowych zastosowa\u0144:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metoda 1: Zastosuj funkcj\u0119 do wielu kolumn<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#multiply values in col1 and col2 by 2<\/span>\ndf %&gt;% \n  mutate(across(c(col1, col2), <span style=\"color: #008000;\">function<\/span> (x) x*2))\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 2: Oblicz statystyk\u0119 podsumowuj\u0105c\u0105 dla wielu kolumn<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#calculate mean of col1 and col2<\/span>\ndf %&gt;%\n  summarise(across(c(col1, col2), mean, na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 3: Obliczanie wielu statystyk podsumowuj\u0105cych dla wielu kolumn<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#calculate mean and standard deviation for col1 and col2\n<\/span>df %&gt;%\n  summarise(across(c(col1, col2), list(mean=mean, sd=sd), na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))\n<\/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:<\/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> (conf=c('East', 'East', 'East', 'West', 'West', 'West'),\n                 points=c(22, 25, 29, 13, 22, 30),\n                 rebounds=c(12, 10, 6, 6, 8, 11))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\n  conf points rebounds\n1 East 22 12\n2 East 25 10\n3 East 29 6\n4 West 13 6\n5 West 22 8\n6 West 30 11<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: Zastosuj funkcj\u0119 do wielu kolumn<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje jak wykorzysta\u0107 funkcj\u0119cross <strong>()<\/strong> do pomno\u017cenia warto\u015bci w kolumnach <strong>punkt\u00f3w<\/strong> i <strong>zbi\u00f3rek<\/strong> przez 2:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">library<\/span> (dplyr)\n\n<span style=\"color: #008080;\">#multiply values in points and rebounds columns by 2\n<\/span>df %&gt;% \n  mutate(across(c(points, rebounds), <span style=\"color: #008000;\">function<\/span> (x) x*2))\n\n  conf points rebounds\n1 East 44 24\n2 East 50 20\n3 East 58 12\n4 West 26 12\n5 West 44 16\n6 West 60 22\n<\/strong><\/span><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2: Oblicz statystyk\u0119 podsumowuj\u0105c\u0105 dla wielu kolumn<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak u\u017cywa\u0107 funkcjicross <strong>()<\/strong> do obliczania \u015bredniej warto\u015bci kolumn <strong>punkt\u00f3w<\/strong> i <strong>zbi\u00f3rek<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#calculate mean value of points an rebounds columns\n<\/span>df %&gt;%\n  summarise(across(c(points, rebounds), mean, na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))\n\n  rebound points\n1 23.5 8.833333<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Nale\u017cy pami\u0119ta\u0107, \u017ce mo\u017cemy r\u00f3wnie\u017c u\u017cy\u0107 funkcji <strong>is.numeric<\/strong> do automatycznego obliczenia statystyki podsumowuj\u0105cej dla wszystkich kolumn numerycznych w ramce danych:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#calculate mean value for every numeric column in data frame\n<\/span>df %&gt;%\n  summarise(across(where(is. <span style=\"color: #3366ff;\">numeric<\/span> ), mean, na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))\n\n  rebound points\n1 23.5 8.833333\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 3: Obliczanie wielu statystyk podsumowuj\u0105cych dla wielu kolumn<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak u\u017cywa\u0107 funkcjicross <strong>()<\/strong> do obliczania \u015bredniej i odchylenia standardowego kolumn <strong>punkt\u00f3w<\/strong> i <strong>zbi\u00f3rek<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#calculate mean and standard deviation for points and rebounds columns\n<\/span>df %&gt;%\n  summarise(across(c(points, rebounds), list(mean=mean, sd=sd), na. <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> ))\n\n  points_mean points_sd rebounds_mean rebounds_sd\n1 23.5 6.156298 8.833333 2.562551<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Uwaga<\/strong> : pe\u0142n\u0105 dokumentacj\u0119 <strong>funkcjicross()<\/strong> znajdziesz <a href=\"https:\/\/dplyr.tidyverse.org\/reference\/across.html\" target=\"_blank\" rel=\"noopener\">tutaj<\/a> .<\/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 funkcje za pomoc\u0105 dplyr:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/dplyr-usun-linie\/\" target=\"_blank\" rel=\"noopener\">Jak usun\u0105\u0107 wiersze za pomoc\u0105 dplyr<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/uporzadkowac-linie-r\/\" target=\"_blank\" rel=\"noopener\">Jak rozmie\u015bci\u0107 wiersze za pomoc\u0105 dplyr<\/a><br \/> Jak filtrowa\u0107 wed\u0142ug wielu warunk\u00f3w za pomoc\u0105 dplyr<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mo\u017cesz u\u017cy\u0107 funkcjicross () z pakietu dplyr w R, aby zastosowa\u0107 transformacj\u0119 do wielu kolumn. Istnieje niezliczona ilo\u015b\u0107 sposob\u00f3w wykorzystania tej funkcji, ale poni\u017csze metody ilustruj\u0105 kilka typowych zastosowa\u0144: Metoda 1: Zastosuj funkcj\u0119 do wielu kolumn #multiply values in col1 and col2 by 2 df %&gt;% mutate(across(c(col1, col2), function (x) x*2)) Metoda 2: Oblicz statystyk\u0119 [&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-3281","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>Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady) \u2013 Statologia<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcjicross() w dplyr, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\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\/dplyr-przez\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady) \u2013 Statologia\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcjicross() w dplyr, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/dplyr-przez\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-18T07:35:38+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\/dplyr-przez\/\",\"url\":\"https:\/\/statorials.org\/pl\/dplyr-przez\/\",\"name\":\"Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady) \u2013 Statologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-18T07:35:38+00:00\",\"dateModified\":\"2023-07-18T07:35:38+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcjicross() w dplyr, podaj\u0105c kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/dplyr-przez\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/dplyr-przez\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/dplyr-przez\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady)\"}]},{\"@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":"Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady) \u2013 Statologia","description":"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcjicross() w dplyr, podaj\u0105c kilka przyk\u0142ad\u00f3w.","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\/dplyr-przez\/","og_locale":"pl_PL","og_type":"article","og_title":"Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady) \u2013 Statologia","og_description":"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcjicross() w dplyr, podaj\u0105c kilka przyk\u0142ad\u00f3w.","og_url":"https:\/\/statorials.org\/pl\/dplyr-przez\/","og_site_name":"Statorials","article_published_time":"2023-07-18T07:35:38+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\/dplyr-przez\/","url":"https:\/\/statorials.org\/pl\/dplyr-przez\/","name":"Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady) \u2013 Statologia","isPartOf":{"@id":"https:\/\/statorials.org\/pl\/#website"},"datePublished":"2023-07-18T07:35:38+00:00","dateModified":"2023-07-18T07:35:38+00:00","author":{"@id":"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965"},"description":"W tym samouczku wyja\u015bniono, jak u\u017cywa\u0107 funkcjicross() w dplyr, podaj\u0105c kilka przyk\u0142ad\u00f3w.","breadcrumb":{"@id":"https:\/\/statorials.org\/pl\/dplyr-przez\/#breadcrumb"},"inLanguage":"pl-PL","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/pl\/dplyr-przez\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/pl\/dplyr-przez\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Dom","item":"https:\/\/statorials.org\/pl\/"},{"@type":"ListItem","position":2,"name":"Jak korzysta\u0107 z funkcjicross() w dplyr (3 przyk\u0142ady)"}]},{"@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\/3281","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=3281"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/posts\/3281\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/media?parent=3281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/categories?post=3281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/tags?post=3281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}