{"id":1863,"date":"2023-07-24T16:39:05","date_gmt":"2023-07-24T16:39:05","guid":{"rendered":"https:\/\/statorials.org\/pl\/zaloguj-sie-r\/"},"modified":"2023-07-24T16:39:05","modified_gmt":"2023-07-24T16:39:05","slug":"zaloguj-sie-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/zaloguj-sie-r\/","title":{"rendered":"Jak obliczy\u0107 po\u0142\u0105czenie r (z przyk\u0142adami)"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 funkcji log()<\/strong> w R, aby obliczy\u0107 log warto\u015bci o okre\u015blonej podstawie:<\/span><\/p>\n

 #calculate log of 9 with base 3<\/span>\nlog(9, base=3)\n<\/strong><\/pre>\n
 Je\u015bli nie okre\u015blisz podstawy, R u\u017cyje domy\u015blnej warto\u015bci bazowej e<\/em> .<\/span><\/p>\n
 #calculate log of 9 with base e<\/em><\/span>\nlog(9)\n\n[1] 2.197225\n<\/strong><\/pre>\n
 Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce wykorzysta\u0107 t\u0119 funkcj\u0119.<\/span><\/p>\n
 Przyk\u0142ad 1: Oblicz log pojedynczej warto\u015bci<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak obliczy\u0107 log poszczeg\u00f3lnych warto\u015bci w R przy u\u017cyciu r\u00f3\u017cnych baz:<\/span><\/p>\n
 #calculate log of 100 with base e<\/em><\/span>\nlog(100)\n\n[1] 4.60517\n\n#calculate log of 100 with base 10\n<\/span>log(100, base=10)\n\n[1] 2\n\n#calculate log of 100 with base 3\n<\/span>log(100, base=3)\n\n[1] 4.191807\n<\/strong><\/pre>\n
 Przyk\u0142ad 2: Oblicz warto\u015bci log w wektorze<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak obliczy\u0107 logarytm ka\u017cdej warto\u015bci wektora w R:<\/span><\/p>\n
 #definevector\nx <- c(3, 6, 12, 16, 28, 45)<\/span>\n\n#calculate log of each value in vector with base e<\/em><\/span>\nlog(x)\n\n[1] 1.098612 1.791759 2.484907 2.772589 3.332205 3.806662\n<\/strong><\/pre>\n
 Przyk\u0142ad 3: Oblicz warto\u015bci dziennika w ramce danych<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak obliczy\u0107 warto\u015bci logu w okre\u015blonej kolumnie ramki danych w R:<\/span><\/p>\n
 #define data frame\ndf <- data. frame<\/span> (var1=c(1, 3, 3, 4, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 9))\n\n#calculate log of each value in 'var1' column\n<\/span>log(df$var1, base=10)<\/span>\n\n[1] 0.0000000 0.4771213 0.4771213 0.6020600 0.6989700\n<\/span><\/span><\/strong><\/pre>\n
 Poni\u017cszy kod pokazuje, jak u\u017cywa\u0107 funkcji sapply()<\/strong> do obliczania warto\u015bci log w ka\u017cdej kolumnie ramki danych:<\/span><\/p>\n
 #define data frame\ndf <- data. frame<\/span> (var1=c(1, 3, 3, 4, 5),\n                 var2=c(7, 7, 8, 3, 2),\n                 var3=c(3, 3, 6, 6, 8),\n                 var4=c(1, 1, 2, 8, 9))\n\n#calculate log of values in every column\n<\/span>sapply(df, function<\/span> (x) log(x, base=10))\n\n          var1 var2 var3 var4\n[1,] 0.0000000 0.8450980 0.4771213 0.0000000\n[2,] 0.4771213 0.8450980 0.4771213 0.0000000\n[3,] 0.4771213 0.9030900 0.7781513 0.3010300\n[4,] 0.6020600 0.4771213 0.7781513 0.9030900\n[5,] 0.6989700 0.3010300 0.9030900 0.9542425\n<\/span><\/span><\/strong><\/pre>\n
 Dodatkowe zasoby<\/strong><\/span><\/h3>\n
 Jak przekszta\u0142ca\u0107 dane w R (log, pierwiastek kwadratowy, pierwiastek sze\u015bcienny)<\/a>
 Jak korzysta\u0107 z funkcji pierwiastka kwadratowego w R<\/a>
 Jak znale\u017a\u0107 antylog warto\u015bci w R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 funkcji log() w R, aby obliczy\u0107 log warto\u015bci o okre\u015blonej podstawie: #calculate log of 9 with base 3 log(9, base=3) Je\u015bli nie okre\u015blisz podstawy, R u\u017cyje domy\u015blnej warto\u015bci bazowej e . #calculate log of 9 with base e log(9) [1] 2.197225 Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce wykorzysta\u0107 t\u0119 funkcj\u0119. Przyk\u0142ad 1: Oblicz […]<\/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-1863","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nJak obliczy\u0107 log in R (z przyk\u0142adami) - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak obliczy\u0107 log w R za pomoc\u0105 funkcji log(), 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\/zaloguj-sie-r\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak obliczy\u0107 log in R (z przyk\u0142adami) - Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak obliczy\u0107 log w R za pomoc\u0105 funkcji log(), podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/zaloguj-sie-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T16:39:05+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=\"1 minuta\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/zaloguj-sie-r\/\",\"url\":\"https:\/\/statorials.org\/pl\/zaloguj-sie-r\/\",\"name\":\"Jak obliczy\u0107 log in R (z przyk\u0142adami) - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-24T16:39:05+00:00\",\"dateModified\":\"2023-07-24T16:39:05+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak obliczy\u0107 log w R za pomoc\u0105 funkcji log(), podaj\u0105c kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/zaloguj-sie-r\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/zaloguj-sie-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/zaloguj-sie-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak obliczy\u0107 po\u0142\u0105czenie r (z przyk\u0142adami)\"}]},{\"@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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