{"id":2961,"date":"2023-07-19T21:48:21","date_gmt":"2023-07-19T21:48:21","guid":{"rendered":"https:\/\/statorials.org\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/"},"modified":"2023-07-19T21:48:21","modified_gmt":"2023-07-19T21:48:21","slug":"leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/","title":{"rendered":"Een normale curve over een histogram in r leggen (2 voorbeelden)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Vaak wilt u misschien een normale curve over een histogram in R leggen.<\/span><\/p>\n<p> <span style=\"color: #000000;\">De volgende voorbeelden laten zien hoe u dit kunt doen in base R en <a href=\"https:\/\/ggplot2.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">ggplot2<\/a> .<\/span><\/p>\n<h3> <strong><span style=\"color: #000000;\">Voorbeeld 1: superponeer een normale curve op een basis R-histogram<\/span><\/strong><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen de volgende code gebruiken om een histogram in basis R te maken en een normale curve over het histogram heen te leggen:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#make this example reproducible\n<span style=\"color: #000000;\">set. <span style=\"color: #3366ff;\">seed<\/span> ( <span style=\"color: #008000;\">0<\/span> )<\/span>\n\n#define data<\/span>\ndata &lt;-rnorm( <span style=\"color: #008000;\">1000<\/span> )\n\n<span style=\"color: #008080;\">#create histogram\n<\/span>hist_data &lt;- hist(data)\n\n<span style=\"color: #008080;\">#define x and y values to use for normal curve\n<\/span>x_values &lt;- seq(min(data), max(data), length = <span style=\"color: #008000;\">100<\/span> )\ny_values &lt;- dnorm(x_values, mean = mean(data), sd = sd(data)) \ny_values &lt;- y_values * diff(hist_data$mids[1:2]) * length(data) \n\n<span style=\"color: #008080;\">#overlay normal curve on histogram\n<\/span>lines(x_values, y_values, lwd = <span style=\"color: #008000;\">2<\/span> )\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-25665\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/superpositionhist1.jpg\" alt=\"leg de normale curve over het histogram in R\" width=\"452\" height=\"461\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">De zwarte curve in de grafiek geeft de normale curve weer.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Voel je vrij om de argumenten <strong>col<\/strong> , <strong>lwd<\/strong> en <strong>lty<\/strong> te gebruiken om respectievelijk de kleur, breedte en lijntype te wijzigen:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#overlay normal curve with custom aesthetics\n<\/span>lines(x_values, y_values, col=' <span style=\"color: #ff0000;\">red<\/span> ', lwd= <span style=\"color: #008000;\">5<\/span> , lty=' <span style=\"color: #ff0000;\">dashed<\/span> ')\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-25666 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/superpositionhist2.jpg\" alt=\"\" width=\"445\" height=\"456\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <strong><span style=\"color: #000000;\">Voorbeeld 2: Plaats de normale curve over het histogram in ggplot2<\/span><\/strong><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen de volgende code gebruiken om een histogram in ggplot2 te maken en een normale curve over het histogram te leggen:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (ggplot2)<\/span>\n\n#make this example reproducible\n<span style=\"color: #000000;\">set. <span style=\"color: #3366ff;\">seed<\/span> ( <span style=\"color: #008000;\">0<\/span> )\n\n<span style=\"color: #008080;\">#define data\n<\/span>data &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (x=rnorm( <span style=\"color: #008000;\">1000<\/span> ))\n\n<span style=\"color: #008080;\">#create histogram and overlay normal curve\n<\/span>ggplot(data, aes(x)) +\n  geom_histogram(aes(y = ..density..), fill=' <span style=\"color: #ff0000;\">lightgray<\/span> ', col=' <span style=\"color: #ff0000;\">black<\/span> ') +\n  stat_function(fun = dnorm, args = list(mean=mean(data$x), sd=sd(data$x)))\n<\/span><\/span><\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-25667\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/superpositionhist3.jpg\" alt=\"overlayhistogram in ggplot2 in R\" width=\"482\" height=\"485\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">De zwarte curve in de grafiek geeft de normale curve weer.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Voel je vrij om de argumenten <strong>col<\/strong> , <strong>lwd<\/strong> en <b>lty<\/b> te gebruiken om respectievelijk de kleur, breedte en lijntype te wijzigen:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#overlay normal curve with custom aesthetics\n<\/span>ggplot(data, aes(x)) +\n  geom_histogram(aes(y = ..density..), fill=' <span style=\"color: #ff0000;\">lightgray<\/span> ', col=' <span style=\"color: #ff0000;\">black<\/span> ') +\n  stat_function(fun = dnorm, args = list(mean=mean(data$x), sd=sd(data$x)),\n                col=' <span style=\"color: #ff0000;\">red<\/span> ', lwd= <span style=\"color: #008000;\">2<\/span> , lty=' <span style=\"color: #ff0000;\">dashed<\/span> '))\n<\/strong><\/span><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-25668 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/superposition3.jpg\" alt=\"\" width=\"474\" height=\"468\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><strong>Opmerking<\/strong> : u kunt de volledige documentatie voor <strong>stat_function<\/strong><a href=\"https:\/\/ggplot2.tidyverse.org\/reference\/geom_function.html\" target=\"_blank\" rel=\"noopener\">hier<\/a> vinden.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Aanvullende bronnen<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">In de volgende tutorials wordt uitgelegd hoe u andere veelvoorkomende bewerkingen in R kunt uitvoeren:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/nl\/relatief-frequentiehistogram-r\/\" target=\"_blank\" rel=\"noopener\">Hoe maak je een relatief frequentiehistogram in R<\/a><br \/> <a href=\"https:\/\/statorials.org\/nl\/r-histogram-springt\/\" target=\"_blank\" rel=\"noopener\">Histogramonderbrekingen opgeven in R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vaak wilt u misschien een normale curve over een histogram in R leggen. De volgende voorbeelden laten zien hoe u dit kunt doen in base R en ggplot2 . Voorbeeld 1: superponeer een normale curve op een basis R-histogram We kunnen de volgende code gebruiken om een histogram in basis R te maken en een [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-2961","post","type-post","status-publish","format-standard","hentry","category-gids"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Een normale curve over een histogram in R leggen (2 voorbeelden) - Statorials<\/title>\n<meta name=\"description\" content=\"In deze tutorial wordt uitgelegd hoe u normale curven op histogrammen in R kunt plaatsen, met verschillende voorbeelden.\" \/>\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\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Een normale curve over een histogram in R leggen (2 voorbeelden) - Statorials\" \/>\n<meta property=\"og:description\" content=\"In deze tutorial wordt uitgelegd hoe u normale curven op histogrammen in R kunt plaatsen, met verschillende voorbeelden.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-19T21:48:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/superpositionhist1.jpg\" \/>\n<meta name=\"author\" content=\"Dr.benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr.benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"2\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/\",\"url\":\"https:\/\/statorials.org\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/\",\"name\":\"Een normale curve over een histogram in R leggen (2 voorbeelden) - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-19T21:48:21+00:00\",\"dateModified\":\"2023-07-19T21:48:21+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze tutorial wordt uitgelegd hoe u normale curven op histogrammen in R kunt plaatsen, met verschillende voorbeelden.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/leg-de-normale-curve-van-het-histogram-in-r-over-elkaar-heen\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Een normale curve over een histogram in r leggen (2 voorbeelden)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/nl\/#website\",\"url\":\"https:\/\/statorials.org\/nl\/\",\"name\":\"Statorials\",\"description\":\"Uw gids voor statistische competentie\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/nl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"de\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\",\"name\":\"Dr.benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"http:\/\/statorials.org\/nl\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr.benjamin anderson\"},\"description\":\"Ik ben Benjamin, een gepensioneerde hoogleraar statistiek die nu een toegewijde Statorials-lesgever is. 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