{"id":3,"date":"2025-01-17T09:14:23","date_gmt":"2025-01-17T09:14:23","guid":{"rendered":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/home\/"},"modified":"2025-06-09T12:51:16","modified_gmt":"2025-06-09T11:51:16","slug":"home","status":"publish","type":"page","link":"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/","title":{"rendered":"Home"},"content":{"rendered":"<p class=\"lead\">sDNA is an academic, governmental and commercial project which originated at the Cardiff University School of Geography and Planning and the Sustainable Places Research Institute.<\/p>\n<p>Dr Crispin Cooper and affiliate Dr Alain Chiaradia, an Urban Design lecturer, lead the work on sDNA, which is a world leading spatial network analysis software, compatible with both GIS and CAD.<\/p>\n<p>We compute accessibility and predict flows of pedestrians, cyclists, vehicles and public transport users. These predictions inform models of health, community cohesion, land values, town centre vitality, land use, accidents and crime.<\/p>\n<p>We provide a simpler alternative to transport models, particularly for sustainable transport.<\/p>\n<div id=\"cu-element-61\" class=\"cu-element cu_postlist\"><hr><h2 class=\"element-title\">Latest news<\/h2>\t\n\n\t\t\t<section>\n\t\t\t\t\n\t\t\t\t<div class=\"row\">\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t<div class=\"col-md-12\">\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<div class=\"teaser with-image\" data-assetid=\"15\" data-status=\"Live\">\t\t\t\t\t\n        \n        <figure class=\"teaser-image\">\n            <a href=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/sdna-for-rhinocad-grasshopper\/\">\n                <img loading=\"lazy\" decoding=\"async\" width=\"170\" height=\"96\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2024\/08\/rhinoCAD-grasshopper-170x96.jpg\" class=\"attachment-teaser-small size-teaser-small wp-post-image\" alt=\"sDNA for RhinoCAD\/Grasshopper\" srcset=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2024\/08\/rhinoCAD-grasshopper-170x96.jpg 170w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2024\/08\/rhinoCAD-grasshopper-250x141.jpg 250w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2024\/08\/rhinoCAD-grasshopper-540x309.jpg 540w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/>            <\/a>\n        <\/figure>\n              \t\t\t\t\t\t\t\t            \t\t\t\t\t\t\t  \n    <div class=\"teaser-body\">\n        <h2 class=\"teaser-title\">\n            <a href=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/sdna-for-rhinocad-grasshopper\/\">sDNA for RhinoCAD\/Grasshopper<\/a>\n        <\/h2> \n        <p class=\"teaser-date\">23 August 2024<\/p>\n        <p>The sDNA+ team, including Crispin Cooper, James Parrot, and Alain Chiaradia, is excited to announce our new plugin for 3D [&hellip;]<\/p>\n    <\/div>\n<\/div>\t\t\t\t\t\n\t\t\t\t\t\t<\/div>\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t<div class=\"col-md-12\">\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<div class=\"teaser with-image\" data-assetid=\"12\" data-status=\"Live\">\t\t\t\t\t\n        \n        <figure class=\"teaser-image\">\n            <a href=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/sdna-is-now-open-source\/\">\n                <img loading=\"lazy\" decoding=\"async\" width=\"170\" height=\"96\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2024\/01\/open-source-logo-png-transparent-170x96.png\" class=\"attachment-teaser-small size-teaser-small wp-post-image\" alt=\"sDNA+ is now open source :-)\" srcset=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2024\/01\/open-source-logo-png-transparent-170x96.png 170w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2024\/01\/open-source-logo-png-transparent-250x141.png 250w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2024\/01\/open-source-logo-png-transparent-550x309.png 550w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/>            <\/a>\n        <\/figure>\n              \t\t\t\t\t\t\t\t            \t\t\t\t\t\t\t  \n    <div class=\"teaser-body\">\n        <h2 class=\"teaser-title\">\n            <a href=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/sdna-is-now-open-source\/\">sDNA+ is now open source \ud83d\ude42<\/a>\n        <\/h2> \n        <p class=\"teaser-date\">2 January 2024<\/p>\n        <p>As of today, no more signups are required for sDNA+ features. The software is now fully open souce (go look [&hellip;]<\/p>\n    <\/div>\n<\/div>\t\t\t\t\t\n\t\t\t\t\t\t<\/div>\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t<div class=\"col-md-12\">\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<div class=\"teaser with-image\" data-assetid=\"126\" data-status=\"Live\">\t\t\t\t\t\n        \n        <figure class=\"teaser-image\">\n            <a href=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/sdna-for-reference-class-forecasting-with-explainable-ai\/\">\n                <img loading=\"lazy\" decoding=\"async\" width=\"170\" height=\"96\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/download-170x96.png\" class=\"attachment-teaser-small size-teaser-small wp-post-image\" alt=\"sDNA for reference class forecasting with explainable AI\" srcset=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/download-170x96.png 170w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/download-250x141.png 250w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/download-550x309.png 550w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/>            <\/a>\n        <\/figure>\n              \t\t\t\t\t\t\t\t            \t\t\t\t\t\t\t  \n    <div class=\"teaser-body\">\n        <h2 class=\"teaser-title\">\n            <a href=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/sdna-for-reference-class-forecasting-with-explainable-ai\/\">sDNA for reference class forecasting with explainable AI<\/a>\n        <\/h2> \n        <p class=\"teaser-date\">27 September 2021<\/p>\n        <p>sDNA is now at the core of adapting Flyvberg\u2018s\u00a0Reference Class Forecasting\u00a0megaproject outcomes appraisal \u2013 using explainable AI to appraise new [&hellip;]<\/p>\n    <\/div>\n<\/div>\t\t\t\t\t\n\t\t\t\t\t\t<\/div>\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/section>\t\t\t\n\t\t\t\t\n\t\t<\/div>\n<div id=\"cu-element-116\" class=\"cu-element cu_snippet\"><hr><h2 class=\"element-title\">Research collaborators<\/h2><p><div id='gallery-1' class='gallery galleryid-126 gallery-columns-3 gallery-size-small'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/shenzhen-300x121\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"121\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/shenzhen-300x121-1.png\" class=\"attachment-small size-small\" alt=\"\" srcset=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/shenzhen-300x121-1.png 300w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/shenzhen-300x121-1-150x61.png 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/esrc\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"125\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/esrc.gif\" class=\"attachment-small size-small\" alt=\"\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wedderburn\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"107\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/wedderburn.png\" class=\"attachment-small size-small\" alt=\"\" srcset=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/wedderburn.png 300w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/wedderburn-150x54.png 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\r\n<div id='gallery-2' class='gallery galleryid-126 gallery-columns-1 gallery-size-small'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wsp\/'><img loading=\"lazy\" decoding=\"async\" width=\"265\" height=\"40\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/wsp.png\" class=\"attachment-small size-small\" alt=\"\" srcset=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/wsp.png 265w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/wsp-150x23.png 150w\" sizes=\"auto, (max-width: 265px) 100vw, 265px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/tongji\/'><img loading=\"lazy\" decoding=\"async\" width=\"287\" height=\"50\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/tongji.png\" class=\"attachment-small size-small\" alt=\"\" srcset=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/tongji.png 287w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/tongji-150x26.png 150w\" sizes=\"auto, (max-width: 287px) 100vw, 287px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/fac_logo\/'><img loading=\"lazy\" decoding=\"async\" width=\"255\" height=\"60\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/fac_logo.png\" class=\"attachment-small size-small\" alt=\"\" srcset=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/fac_logo.png 255w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/fac_logo-150x35.png 150w, https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/fac_logo-250x60.png 250w\" sizes=\"auto, (max-width: 255px) 100vw, 255px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\r\n<div id='gallery-3' class='gallery galleryid-126 gallery-columns-1 gallery-size-small'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/arup\/'><img loading=\"lazy\" decoding=\"async\" width=\"117\" height=\"35\" src=\"https:\/\/research-sites.cardiff.ac.uk\/spatial-design-network-analysis-sdna\/wp-content\/uploads\/sites\/21\/2025\/01\/arup.png\" class=\"attachment-small size-small\" alt=\"\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n<\/p>\r\n<style>figure.gallery-item img {aspect-ratio:none;object-fit: contain;height:100%; width: auto;max-width: 300px;}<\/style><\/div>\n<hr \/>\n<h2>Contact us<\/h2>\n<div id=\"cu-element-96\" class=\"cu-element cu_contact\">\n<section class='section-contact'>   \n\n    <div class=\"contact\">\n                    <h2 class=\"contact-title\">sDNA Team<\/h2>\n                        <ul class=\"list list-icons text-sm\">\n                            <li><svg class=\"icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 32 21.66\"><title>Email<\/title><path d=\"M11.88,14.28l-10.5-9a0.19,0.19,0,0,1,.13,0,0.34,0.34,0,0,0,.16,0,0.19,0.19,0,0,1,.13,0,0.19,0.19,0,0,0,.13,0l28.19,0a0.1,0.1,0,0,1,.13,0,0.24,0.24,0,0,0,.16,0,0.19,0.19,0,0,1,.13,0,0.1,0.1,0,0,0,.13,0l-10.5,9L16,17.63v0Zm-1.34,1.19L0.13,25.53a0.61,0.61,0,0,0-.06-0.19,0.15,0.15,0,0,1,0-.12V25.06a0.29,0.29,0,0,1,0-.19V7A1.12,1.12,0,0,1,.06,6.69a0.24,0.24,0,0,0,0-.16v0ZM31.94,6.69A1.18,1.18,0,0,1,32,7V25.22c0,0.09-.09.19-0.13,0.28v0L21.47,15.47,31.91,6.56a0.24,0.24,0,0,0,0,.13h0ZM20.06,16.59L30.59,26.75a0.19,0.19,0,0,0-.12,0,0.1,0.1,0,0,1-.12,0,0.19,0.19,0,0,0-.12,0,0.1,0.1,0,0,1-.12,0v0l-28.19,0a0.1,0.1,0,0,1-.12,0,0.19,0.19,0,0,0-.12,0,0.1,0.1,0,0,1-.12,0,0.19,0.19,0,0,0-.12,0L11.94,16.63,16,19.94Z\" transform=\"translate(0 -5.19)\"><\/path><\/svg><a href=\"mailto:sdna@cardiff.ac.uk\">sdna@cardiff.ac.uk<\/a><\/li>\n                                <\/ul>\n    <\/div>\n<\/section><\/div>\n","protected":false},"excerpt":{"rendered":"sDNA is now at the core of adapting Flyvberg\u2018s\u00a0Reference Class Forecasting\u00a0megaproject outcomes appraisal \u2013 using explainable AI to appraise new 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