{"id":1363,"date":"2023-07-26T17:01:40","date_gmt":"2023-07-26T17:01:40","guid":{"rendered":"https:\/\/statorials.org\/nl\/maritieme-thermische-kaart\/"},"modified":"2023-07-26T17:01:40","modified_gmt":"2023-07-26T17:01:40","slug":"maritieme-thermische-kaart","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/maritieme-thermische-kaart\/","title":{"rendered":"Hoe u hittekaarten maakt met seaborn (met voorbeelden)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Een <strong>heatmap<\/strong> is een type diagram dat verschillende kleurtinten gebruikt om gegevenswaarden weer te geven.<\/span><\/p>\n<p> <span style=\"color: #000000;\">In deze zelfstudie wordt uitgelegd hoe u heatmaps kunt maken met behulp van de <a href=\"https:\/\/seaborn.pydata.org\/index.html\" target=\"_blank\" rel=\"noopener\">Seaborn<\/a> Python-visualisatiebibliotheek met de volgende gegevensset:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#import seaborn<\/span>\n<span style=\"color: #008000;\">import<\/span> seaborn <span style=\"color: #008000;\">as<\/span> sns\n\n<span style=\"color: #008080;\">#load \"flights\" dataset\n<\/span>data = sns. <span style=\"color: #3366ff;\">load_dataset<\/span> (\u201c <span style=\"color: #008000;\">flights<\/span> \u201d)\ndata = data. <span style=\"color: #3366ff;\">pivot<\/span> (\" <span style=\"color: #008000;\">month<\/span> \", \" <span style=\"color: #008000;\">year<\/span> \", \" <span style=\"color: #008000;\">passengers<\/span> \")\n\n<span style=\"color: #008080;\">#view first five rows of dataset\n<\/span>data. <span style=\"color: #3366ff;\">head<\/span> ()\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13526 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/seaborn_heatmap1.png\" alt=\"\" width=\"557\" height=\"188\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Maak een eenvoudige hittekaart<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen de volgende syntaxis gebruiken om een eenvoudige heatmap voor deze gegevensset te maken:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>sns. <span style=\"color: #3366ff;\">heatmap<\/span> (data)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13527 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/seaborn_heatmap2.png\" alt=\"Seaborn-hittekaart\" width=\"575\" height=\"306\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Thee<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Pas de grootte van de heatmap aan<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen het argument <strong>figsize<\/strong> gebruiken om de totale grootte van de heatmap aan te passen:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#set heatmap size\n<span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt<\/span>\n<span style=\"color: #000000;\">plt. <span style=\"color: #3366ff;\">figure<\/span> (figsize = (12.8))<\/span><\/span>\n\n<span style=\"color: #008080;\">#create heatmap<\/span>\nsns. <span style=\"color: #3366ff;\">heatmap<\/span> (data)<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13528 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/seaborn_heatmap3.png\" alt=\"Heatmap seaborn maat aanpassen\" width=\"633\" height=\"432\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Verander de kleuren van de heatmap<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen het <strong>cmap-<\/strong> argument gebruiken om de kleuren te wijzigen die in de heatmap worden gebruikt. We kunnen bijvoorbeeld het kleurenpalet \u201cSpectral\u201d kiezen:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\">sns. <span style=\"color: #3366ff;\">heatmap<\/span> (data, cmap=\" <span style=\"color: #008000;\">Spectral<\/span> \")\n<\/span><\/span><\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13529 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/seaborn_heatmap4.png\" alt=\"Seaborn-hittekaart met cmap-argument\" width=\"609\" height=\"324\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Of we kunnen de \u201ccoolwarm\u201d kleurenkaart kiezen:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\">sns. <span style=\"color: #3366ff;\">heatmap<\/span> (data, cmap=\" <span style=\"color: #008000;\">coolwarm<\/span> \")<\/span><\/span><\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13530 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/seaborn_heatmap5.png\" alt=\"\" width=\"578\" height=\"304\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/seaborn.pydata.org\/tutorial\/color_palettes.html\" target=\"_blank\" rel=\"noopener\">Hier<\/a> vindt u een volledige lijst met beschikbare cmap-opties.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Annoteer de hittekaart<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">We kunnen de volgende syntaxis gebruiken om elke cel in de heatmap te annoteren met geheeltallige opmaak en de lettergrootte te specificeren:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\">sns. <span style=\"color: #3366ff;\">heatmap<\/span> (data, annot= <span style=\"color: #008000;\">True<\/span> , fmt=\" <span style=\"color: #008000;\">d<\/span> \", annot_kws={\" <span style=\"color: #008000;\">size<\/span> \":13})<\/span><\/span><\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13531 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/seaborn_heatmap6.png\" alt=\"Seaborn hittekaart met annotaties\" width=\"617\" height=\"329\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Wijzig de Heatmap-kleurenbalk<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Ten slotte kunnen we de kleurenbalk uitschakelen als we het <strong>cbar-<\/strong> argument willen gebruiken:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\">sns. <span style=\"color: #3366ff;\">heatmap<\/span> (data, cbar= <span style=\"color: #008000;\">False<\/span> )<\/span><\/span><\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13533 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/seaborn_heatmap7.png\" alt=\"Seaborn hittekaart zonder kleurenbalk\" width=\"606\" height=\"294\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Vind meer Seaborn-tutorials op deze pagina .<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Een heatmap is een type diagram dat verschillende kleurtinten gebruikt om gegevenswaarden weer te geven. In deze zelfstudie wordt uitgelegd hoe u heatmaps kunt maken met behulp van de Seaborn Python-visualisatiebibliotheek met de volgende gegevensset: #import seaborn import seaborn as sns #load &#8222;flights&#8220; dataset data = sns. load_dataset (\u201c flights \u201d) data = data. pivot [&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-1363","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>Hoe u hittekaarten maakt met Seaborn (met voorbeelden)<\/title>\n<meta name=\"description\" content=\"In deze tutorial wordt uitgelegd hoe u heatmaps maakt en bewerkt in Seaborn, een Python-visualisatiebibliotheek.\" \/>\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\/maritieme-thermische-kaart\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hoe u hittekaarten maakt met Seaborn (met voorbeelden)\" \/>\n<meta property=\"og:description\" content=\"In deze tutorial wordt uitgelegd hoe u heatmaps maakt en bewerkt in Seaborn, een Python-visualisatiebibliotheek.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/maritieme-thermische-kaart\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-26T17:01:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/seaborn_heatmap1.png\" \/>\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=\"1\u00a0Minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/nl\/maritieme-thermische-kaart\/\",\"url\":\"https:\/\/statorials.org\/nl\/maritieme-thermische-kaart\/\",\"name\":\"Hoe u hittekaarten maakt met Seaborn (met voorbeelden)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-26T17:01:40+00:00\",\"dateModified\":\"2023-07-26T17:01:40+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze tutorial wordt uitgelegd hoe u heatmaps maakt en bewerkt in Seaborn, een Python-visualisatiebibliotheek.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/maritieme-thermische-kaart\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/maritieme-thermische-kaart\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/maritieme-thermische-kaart\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hoe u hittekaarten maakt met seaborn (met 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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