{"id":2102252,"date":"2023-10-19T07:50:22","date_gmt":"2023-10-19T14:50:22","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&p=2102252"},"modified":"2023-10-19T07:54:56","modified_gmt":"2023-10-19T14:54:56","slug":"enriching-overture-data-with-gers","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/enriching-overture-data-with-gers","title":{"rendered":"Enriching Overture Data with GERS"},"author":6281,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[22941],"tags":[43131,43101,761752,768802,768812],"industry":[],"product":[36581,36551],"class_list":["post-2102252","blog","type-blog","status-publish","format-standard","hentry","category-mapping","tag-arcade-expression","tag-arcgis-living-atlas-of-the-world","tag-buildings","tag-overture","tag-overture-maps-foundation","product-arcgis-living-atlas","product-arcgis-online"],"acf":{"authors":[{"ID":6281,"user_firstname":"Deane","user_lastname":"Kensok","nickname":"Deane Kensok","user_nicename":"dkensok","display_name":"Deane Kensok","user_email":"dkensok@esri.com","user_url":"","user_registered":"2018-03-02 00:18:09","user_description":"Deane Kensok has been with Esri since 1990 and is currently the ArcGIS Content CTO and a member of the Living Atlas team. For the past twenty years, Deane has worked on a variety of Internet mapping and data publishing products and projects, which have led to his current work with ArcGIS Online and the Living Atlas.","user_avatar":""}],"short_description":"The latest release of Overture data includes a GERS ID for 1.6m buildings that can be used to conflate data and enable interesting uses cases.","flexible_content":[{"acf_fc_layout":"content","content":"

This week, Overture Maps<\/a><\/strong> released its second version of open map data.\u00a0 One of the important new features in this release is the introduction of Global Entity Reference System<\/a> (GERS) IDs.\u00a0 GERS IDs have been assigned to over 1.6 million building footprints<\/strong> across several cities in North America, South America, and Europe.<\/p>\n

GERS is a system of encoding map data to a shared universal reference, which provides an easy mechanism to conflate data from different data providers based on a specific GERS ID.\u00a0 There are several use cases<\/a><\/strong> where this would be helpful for different data themes, and we wanted to demonstrate a couple of them for buildings with this release.<\/p>\n

Buildings Enrichment<\/strong><\/h2>\n

The Overture Buildings in this release include over 1.3 billion features<\/strong> from multiple data providers, including OpenStreetMap, Microsoft, and Esri Community Maps.\u00a0 The Overture team has conflated these building features into a single data layer and transformed them into a common data schema<\/a>.\u00a0 The data schema includes the building footprint geometry and a small set of properties (e.g., class, height, names).<\/p>\n

The Buildings theme provides a large (and rapidly growing!) collection of building footprints, but there could be other building information<\/strong> that you\u2019d like to add to them for your purposes.\u00a0 This might include property management, risk assessment, economic development, 3D visualization, or other use cases.<\/p>\n

USA Structures<\/strong><\/h3>\n

One useful dataset that includes rich building information is USA Structures<\/a><\/strong>, provided by FEMA in collaboration with other U.S. Agencies.\u00a0 This open data is available for download and as a feature layer<\/a> in Esri\u2019s ArcGIS Living Atlas of the World<\/a>.\u00a0 The USA Structures include over 75 million structures<\/strong> larger than 450 square feet for use in flood insurance mitigation and emergency preparedness and response.\u00a0 The USA Structures include their own Universal Unique Identifier (UUID) for each structure, as well as several additional attributes (e.g. occupancy, address, city, county, area, height, coordinates, etc.).<\/p>\n

The Overture Buildings with GERS IDs are available for 4 cities in the United States<\/strong> (i.e., Seattle, WA; Spokane, WA; Macon, GA, and Charleston, SC).\u00a0 The USA Structures data can be overlaid on the Overture Buildings to see that, while there are significant differences in the building geometry given different data acquisition procedures, there is also a substantial amount of overlap between the different data sources.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2102282,"id":2102282,"title":"fig1_omf_bldg_usa_struc_1000_250","filename":"fig1_omf_bldg_usa_struc_1000_250.png","filesize":191894,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-online\/mapping\/enriching-overture-data-with-gers\/fig1_omf_bldg_usa_struc_1000_250","alt":"Overture Buildings with USA Structures","author":"6281","description":"Overture Buildings symbolized by \u2018class\u2019 and overlaid with USA Structures outlines","caption":"Figure 1: Overture Buildings by \u2018class\u2019 displayed with USA Structures outlines","name":"fig1_omf_bldg_usa_struc_1000_250","status":"inherit","uploaded_to":2102252,"date":"2023-10-16 22:38:51","modified":"2023-10-17 23:17:58","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1000,"height":250,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250.png","medium-width":464,"medium-height":116,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250.png","medium_large-width":768,"medium_large-height":192,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250.png","large-width":1000,"large-height":250,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250.png","1536x1536-width":1000,"1536x1536-height":250,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250.png","2048x2048-width":1000,"2048x2048-height":250,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250-826x207.png","card_image-width":826,"card_image-height":207,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2023\/10\/fig1_omf_bldg_usa_struc_1000_250.png","wide_image-width":1000,"wide_image-height":250}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"

Data Conflation<\/strong><\/h3>\n

Given the additional set of attributes available in the USA Structures, we thought it would be a useful dataset to demonstrate conflation with the Overture Buildings.\u00a0 Esri used ArcGIS Pro software to perform a spatial join of the two datasets, appending two additional fields on the USA Structures:<\/p>\n