{"id":4398,"date":"2015-03-16T14:52:54","date_gmt":"2015-03-16T13:52:54","guid":{"rendered":"http:\/\/mappinglondon.co.uk\/?p=4398"},"modified":"2015-03-16T15:08:40","modified_gmt":"2015-03-16T14:08:40","slug":"half-a-million-journeys-on-the-london-underground","status":"publish","type":"post","link":"https:\/\/mappinglondon.co.uk\/2015\/half-a-million-journeys-on-the-london-underground\/","title":{"rendered":"Half a Million Journeys on the London Underground"},"content":{"rendered":"<p><iframe loading=\"lazy\" title=\"A day on the London Underground\" src=\"https:\/\/player.vimeo.com\/video\/121462010?h=45c884f17b&amp;dnt=1&amp;app_id=122963\" width=\"780\" height=\"530\" frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p><a href=\"http:\/\/wgallia.com\/#!underground\">This animation<\/a> from <a href=\"http:\/\/wgallia.com\/\">Will Gallia<\/a> shows over 500,000 individual journeys on the London Underground network, it&#8217;s a <a href=\"http:\/\/www.tfl.gov.uk\/info-for\/open-data-users\/our-feeds\">5% sample of Oyster-card journeys<\/a> during a week back in 2009. Will has taken the individual origin\/destination data and applied a routing algorithm to determine the likely route. I don&#8217;t think it&#8217;s perfect (the Underground flows north to London Bridge in the morning peak look a little low) but you can still clearly see people streaming inwards in the morning, and back outwards in the evening. You can also see comparatively underused parts of the network &#8211; the Hainault loop of the Central line in the top-right for instance, Aldgate on the Met, and individual bursts of travellers appearing in Chesham and Amersham in the far top-left (the trains there are quite infrequent). <\/p>\n<p>A key innovation is transplanting these journeys back onto the geometries of the &#8220;official&#8221; (and non-geographical) <a href=\"http:\/\/www.tfl.gov.uk\/cdn\/static\/cms\/documents\/standard-tube-map.pdf\">Beck-style tube map<\/a>, so that it looks like the regular tube map that everyone knows, but &#8220;buzzing&#8221; with &#8211; and indeed created solely by &#8211; people. His animation slows the clock at one point and &#8220;flies in&#8221; to part of the map for a more detailed look. Each dot is a single person, undergoing their journey at that moment of the day.<\/p>\n<p>I like the simplicity of the idea &#8211; one person, one coloured dot. The directional flows therefore stand out, particularly at the start and end of the day when the network is quieter. During the rush hours it&#8217;s pretty intense &#8211; but then, tube travel is pretty intense then too! The density of the dots is sufficient that the map itself is fully recreated by the people moving along the network.<\/p>\n<p>Will has used advanced coding and optimisation techniques, using openFrameworks, to allow for thousands of journeys being animated simultaneously. He&#8217;s open-sourced his code, you can see\/download it on GitHub in two parts, <a href=\"github.com\/whg\/underground\">here<\/a> and <a href=\"https:\/\/github.com\/whg\/underground-visualisation\">here<\/a>.<\/p>\n<p><a href=\"https:\/\/vimeo.com\/121462010\">Link directly to the video<\/a>.<br \/>\n<a href=\"http:\/\/wgallia.com\/#!underground\">Link to more information about the project<\/a>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/mappinglondon.co.uk\/wp-content\/uploads\/2015\/03\/willgallia_undergroundvis2.jpg\" alt=\"willgallia_undergroundvis2\" width=\"1200\" height=\"745\" class=\"aligncenter size-full wp-image-4401\" srcset=\"https:\/\/mappinglondon.co.uk\/wp-content\/uploads\/2015\/03\/willgallia_undergroundvis2.jpg 1200w, https:\/\/mappinglondon.co.uk\/wp-content\/uploads\/2015\/03\/willgallia_undergroundvis2-300x186.jpg 300w, https:\/\/mappinglondon.co.uk\/wp-content\/uploads\/2015\/03\/willgallia_undergroundvis2-1024x636.jpg 1024w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This animation from Will Gallia shows over 500,000 individual journeys on the London Underground network, it&#8217;s a 5% sample of Oyster-card journeys during a week<\/p>\n","protected":false},"author":1,"featured_media":4401,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,164],"tags":[484,415,696,142],"class_list":["post-4398","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data","category-tube","tag-animation","tag-journeys","tag-python","tag-tfl"],"_links":{"self":[{"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/posts\/4398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/comments?post=4398"}],"version-history":[{"count":9,"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/posts\/4398\/revisions"}],"predecessor-version":[{"id":4409,"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/posts\/4398\/revisions\/4409"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/media\/4401"}],"wp:attachment":[{"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/media?parent=4398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/categories?post=4398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mappinglondon.co.uk\/wp-json\/wp\/v2\/tags?post=4398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}