{"id":1184,"date":"2023-07-27T09:08:03","date_gmt":"2023-07-27T09:08:03","guid":{"rendered":"https:\/\/statorials.org\/nl\/matplotlib-trillen\/"},"modified":"2023-07-27T09:08:03","modified_gmt":"2023-07-27T09:08:03","slug":"matplotlib-trillen","status":"publish","type":"post","link":"https:\/\/statorials.org\/nl\/matplotlib-trillen\/","title":{"rendered":"Een quiver-plot maken in matplotlib (met voorbeelden)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Een <strong>quiver-plot<\/strong> is een type plot dat pijlen weergeeft met richtingscomponenten U en V op cartesische co\u00f6rdinaten gespecificeerd door X en Y.<\/span><\/p>\n<p> <span style=\"color: #000000;\">We kunnen eenvoudig een quiver-plot maken in Matplotlib met behulp van de <strong>quiver()-<\/strong> functie, die de volgende syntaxis gebruikt:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>trillen (x, y, u, v)<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">Goud:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>x:<\/strong> de x-co\u00f6rdinaten van de pijllocaties<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>y:<\/strong> de y-co\u00f6rdinaten van de pijllocaties<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>u:<\/strong> De x-componenten van de pijlvectoren<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>v:<\/strong> De y-componenten van de pijlvectoren<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Deze tutorial biedt verschillende voorbeelden van praktisch gebruik van deze functie.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Voorbeeld 1: pijlkokertekening met een enkele pijl<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u een pijlkokerdiagram weergeeft met een enkele pijl:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n\n<span style=\"color: #008080;\">#define plots<\/span>\nfig, ax = plt. <span style=\"color: #3366ff;\">subplots<\/span> ()\n\n<span style=\"color: #008080;\">#define coordinates and directions\n<\/span>x = 0\ny = 0\nu = 15\nv = 3\n\n<span style=\"color: #008080;\">#create quiver plot\n<\/span>ax. <span style=\"color: #3366ff;\">quiver<\/span> (x, y, u, v)\n\n<span style=\"color: #008080;\">#display quiver plot\n<\/span>plt. <span style=\"color: #3366ff;\">show<\/span> ()\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11778 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/carquois1.png\" alt=\"Quiver-plot in matplotlib\" width=\"398\" height=\"261\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Voorbeeld 2: pijlkokerindeling met twee pijlen<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u een pijlkokerdiagram met twee pijlen kunt weergeven:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n\n<span style=\"color: #008080;\">#define plots<\/span>\nfig, ax = plt. <span style=\"color: #3366ff;\">subplots<\/span> ()\n\n<span style=\"color: #008080;\">#define coordinates and directions\n<\/span>x = [0, 0]\ny = [0, 0]\nu = [0, 1]\nv = [-2, 0]\n<span style=\"color: #008080;\">#create quiver plot\n<\/span>ax. <span style=\"color: #3366ff;\">quiver<\/span> (x, y, u, v, scale = <span style=\"color: #008000;\">10<\/span> )\n\n<span style=\"color: #008080;\">#display quiver plot\n<\/span>plt. <span style=\"color: #3366ff;\">show<\/span> ()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11779 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/carquois3.png\" alt=\"Pythonkoker met twee pijlen\" width=\"409\" height=\"264\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">Merk op dat het <strong>schaalargument<\/strong> de pijlen langer schaalt, waardoor ze gemakkelijker zichtbaar zijn in de grafiek.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Voorbeeld 3: pijlkokerplot met een mesh-raster<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">De volgende code laat zien hoe u een quiver-plot kunt weergeven met behulp van een mesh-raster:<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\">#define plots<\/span>\nfig, ax = plt. <span style=\"color: #3366ff;\">subplots<\/span> ()\n\n<span style=\"color: #008080;\">#define coordinates and directions\n<\/span>x,y = np. <span style=\"color: #3366ff;\">meshgrid<\/span> (np. <span style=\"color: #3366ff;\">arange<\/span> (-2, 2, .1), np. <span style=\"color: #3366ff;\">arange<\/span> (-2, 2, .1))\nz = x*np. <span style=\"color: #3366ff;\">exp<\/span> (-x**2 - y**2)\nv, u = np. <span style=\"color: #3366ff;\">gradient<\/span> (z, .1, .1)\n\n<span style=\"color: #008080;\">#create quiver plot\n<\/span>ax. <span style=\"color: #3366ff;\">quiver<\/span> (x, y, u, v)\n\n<span style=\"color: #008080;\">#display quiver plot\n<\/span>plt. <span style=\"color: #3366ff;\">show<\/span> ()<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-11780 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/carquois4.png\" alt=\"Matplotlib trillen\" width=\"436\" height=\"283\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">U kunt de volledige documentatie van de functie quiver() <a href=\"https:\/\/matplotlib.org\/3.3.2\/api\/_as_gen\/matplotlib.pyplot.quiver.html\" target=\"_blank\" rel=\"noopener noreferrer\">hier<\/a> vinden.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Een quiver-plot is een type plot dat pijlen weergeeft met richtingscomponenten U en V op cartesische co\u00f6rdinaten gespecificeerd door X en Y. We kunnen eenvoudig een quiver-plot maken in Matplotlib met behulp van de quiver()- functie, die de volgende syntaxis gebruikt: trillen (x, y, u, v) Goud: x: de x-co\u00f6rdinaten van de pijllocaties y: de [&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-1184","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 Quiver-plot maken in Matplotlib (met voorbeelden)<\/title>\n<meta name=\"description\" content=\"In deze tutorial wordt uitgelegd hoe u een quiver-plot in Matplotlib maakt, 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\/matplotlib-trillen\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Een Quiver-plot maken in Matplotlib (met voorbeelden)\" \/>\n<meta property=\"og:description\" content=\"In deze tutorial wordt uitgelegd hoe u een quiver-plot in Matplotlib maakt, met verschillende voorbeelden.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/nl\/matplotlib-trillen\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T09:08:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/carquois1.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\/matplotlib-trillen\/\",\"url\":\"https:\/\/statorials.org\/nl\/matplotlib-trillen\/\",\"name\":\"Een Quiver-plot maken in Matplotlib (met voorbeelden)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/nl\/#website\"},\"datePublished\":\"2023-07-27T09:08:03+00:00\",\"dateModified\":\"2023-07-27T09:08:03+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/nl\/#\/schema\/person\/d4b8842173cca1bb62cdec41860e4219\"},\"description\":\"In deze tutorial wordt uitgelegd hoe u een quiver-plot in Matplotlib maakt, met verschillende voorbeelden.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/nl\/matplotlib-trillen\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/nl\/matplotlib-trillen\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/nl\/matplotlib-trillen\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Thuis\",\"item\":\"https:\/\/statorials.org\/nl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Een quiver-plot maken in matplotlib (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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