{"id":744,"date":"2014-07-09T16:24:39","date_gmt":"2014-07-09T16:24:39","guid":{"rendered":"http:\/\/www.cardiff.ac.uk\/sdna\/?p=744"},"modified":"2014-07-09T16:24:39","modified_gmt":"2014-07-09T16:24:39","slug":"sdna-for-active-travel-modelling","status":"publish","type":"post","link":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/sdna-for-active-travel-modelling\/","title":{"rendered":"sDNA for Active Travel modelling"},"content":{"rendered":"<figure id=\"attachment_745\" aria-describedby=\"caption-attachment-745\" style=\"width: 200px\" class=\"wp-caption alignright\"><a href=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/sdna-for-active-travel-modelling\/10153653_623359041085651_609783829284150178_n\/\" rel=\"attachment wp-att-745\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-745\" title=\"10153653_623359041085651_609783829284150178_n\" src=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/wp-content\/uploads\/2014\/07\/10153653_623359041085651_609783829284150178_n-200x300.jpg\" alt=\"\" width=\"200\" height=\"300\" \/><\/a><figcaption id=\"caption-attachment-745\" class=\"wp-caption-text\">sDNA&#8217;s chief developer demonstrating his commitment to active travel (at a mountain bike endurance event!)<\/figcaption><\/figure>\n<p><em><strong>Updated May 2016: sorry this post is hopelessly out of date!\u00a0 I have inserted a few extra items into the list below, but for more details on active travel models in sDNA see recent blog posts.<\/strong><\/em><\/p>\n<p><strong>For examples of cycling models see the <a href=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/wp-content\/downloads\/documentation\/wa_march_2016.pdf\">slides I presented to the Welsh Assembly<\/a>.<\/strong><\/p>\n<p><strong>If you&#8217;d like somebody else to run models for you please contact <a href=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/sdna-partners-offering-pedestrian-and-cycle-modelling\/\">one of our partners<\/a>.<\/strong><\/p>\n<p>The sDNA team worked hard to enhance our capabilities for active travel modelling. \u00a0We are working on numerous real-world projects to stay in touch with the needs of practitioners, as well as completing work on <a title=\"New Healthy Cities book showcases spatial health research, including sDNA\" href=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/new-healthy-cities-book-showcases-spatial-health-research-including-sdna\/\">health<\/a>, <a title=\"Measuring access to natural recreational space\" href=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/measuring-access-to-natural-recreational-space\/\">recreation<\/a> and <a title=\"Predicting community cohesion\" href=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/sdna-predicting-community-cohesion\/\">community cohesion<\/a>.<\/p>\n<p>I thought we&#8217;d better get all of our information relevant to active transport in one place, so here goes. \u00a0I&#8217;m sorry if this sounds like a sales pitch &#8211; but that&#8217;s what it is (selling doesn&#8217;t come naturally to academics)!<\/p>\n<p>Here is what we offer already:<\/p>\n<ul>\n<li>The <em>closeness\u00a0<\/em>measures in standard sDNA provide information on both the quantity and efficiency of <strong>access to facilities<\/strong>, as well as <strong>severance\u00a0<\/strong>and\u00a0<strong>network gravity<\/strong>.<\/li>\n<li>The <em>betweenness<\/em> measures in standard sDNA show where <strong>flows of pedestrians, cyclists and cars<\/strong> are likely to build.<\/li>\n<li>The\u00a0<em>hybrid metric<\/em> system in sDNA+ allows for modelling routes that trade off multiple characteristics. \u00a0For example, you can analyze cycling routes that strike a balance between\u00a0<strong>speed, simplicity, hill avoidance <\/strong>and<strong> traffic avoidance.<\/strong> \u00a0The traffic data itself can be generated by a standard sDNA model.<\/li>\n<li>The <em>hybrid radius<\/em> and <em>banded radius <\/em>system allows for more accurate cyclist\/pedestrian models simulating the decision to walk\/cycle based on accessibility.<\/li>\n<li><em>Preset metrics <\/em>allow quick selection of rules for simulating cyclists, pedestrians, motor vehicles and public transport<\/li>\n<li>The new statistics tools allow easy and accurate calibration of sDNA models to real data, especially when combined with <em>banded radius<\/em> from sDNA+.<\/li>\n<li>The <em>origin<\/em> and\u00a0<em>destination<\/em> weighting system in sDNA+ allows users to incorporate data they already have on <strong>homes, jobs and facilities<\/strong>. \u00a0Alternatively if no such data is available,\u00a0<em>link weighting<\/em> can be used as a <strong>proxy missing data<\/strong>.<\/li>\n<li>sDNA+ can output\u00a0<em>geodesics<\/em> to assist in <strong>evaluation of likely routes<\/strong> by any means the user wishes. \u00a0For example, all individual simulated pedestrian routes can be examined for exposure to traffic.<\/li>\n<li>sDNA+ can output <em>predicted users of any given link in the network <\/em>&#8211; especially useful for visualising the effect of new infrastructure.<\/li>\n<li>sDNA+ can output\u00a0<em>network buffers<\/em> even for <strong>large scale<\/strong>, country-wide networks.<\/li>\n<li>sDNA+ operates in <em>full 3d<\/em>, allowing for the inclusion of terrain contours and multilevel spaces inside buildings such as <strong>stations and shopping malls<\/strong>.<\/li>\n<li>All of the above can be compared <strong>before and after<\/strong> a simulated intervention.<\/li>\n<\/ul>\n<p><a title=\"sDNA+\" href=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/sdna-plus\/\">sDNA+<\/a> is now available to the public as well as our research collaborators.\u00a0 If you are interested please <a title=\"Contact\" href=\"https:\/\/sdna.cardiff.ac.uk\/sdna\/about\/contact\/\">get in touch<\/a>.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"sDNA's chief developer demonstrating his commitment to active travel (at a mountain bike endurance event!) Updated May 2016: sorry this [&hellip;]","protected":false},"author":99,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"cu_profile":[],"class_list":["post-744","post","type-post","status-publish","format-standard","hentry","category-all-sdna"],"meta_box":[],"_links":{"self":[{"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/posts\/744","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/users\/99"}],"replies":[{"embeddable":true,"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/comments?post=744"}],"version-history":[{"count":0,"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/posts\/744\/revisions"}],"wp:attachment":[{"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/media?parent=744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/categories?post=744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/tags?post=744"},{"taxonomy":"cu_profile","embeddable":true,"href":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-json\/wp\/v2\/cu_profile?post=744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}