Geospatial W orld Forum 2014 May 8 th , 2014 - Geneva David Beni / Annick Deshayes - arx iT SA www.arxit.com GWF 2014
Geneva Geneva cadastral data cadastral data historization(4D) historization(4D) Outline Outline Introduction Context Context Technical description - Use of temporal data Feedback / Conclusion GWF 2014
arx iT presentation Founded in 2001 Introduction Company based in Geneva, Paris, Lyon Context Technical description Core business : provide a Core business : provide a wide range of GIS wide range of GIS services services Use of temporal data Use of temporal data The company is active in the following domains: Feedback Conclusion - Set up SDI - Set up SDI - Custom GIS development (Desktop, Web and mobile) - Spatial data processing (open & big data) - Consulting / Expertise / Training GWF 2014
Customer’s context The customer = Official Survey Department of the Introduction Canton of Geneva (DMO) Canton of Geneva (DMO) Context DMO is in charge to keep the cadastral data up to Technical description Use of temporal data Use of temporal data date date Feedback Conclusion To meet a legal requirement ( Ogéo law), forcing the historical description of geographical data - > historical description of geographical data - > - DM O decided to add a tem poral com ponent to its data management / process management / process The main goal is to query and visualize the state of the cadastral data for any given date GWF 2014
Customer’s context st step 1 : analyze the possibilities provided by existing Introduction standard ESRI products used by DMO standard ESRI products used by DMO such such as as Context ArcGIS. Technical description - Unfortunately , using these existing tools was not - Unfortunately , using these existing tools was not Use of temporal data Use of temporal data sufficient enough to meet the client’s needs regarding Feedback it’s data management Conclusion nd step nd step 2 2 : development of a : development of a prototype tool – based on prototype tool – based on ESRI technologies –capable of managing data temporality temporality - This proof of concept was a success, as it was possible to visualize the evolution of geographical objects throughout tim objects throughout tim e and e and space space GWF 2014
Customer’s approach rd step : implementation of the final solution, in a 3 Introduction production environment production environment Context This solution is composed of : Technical description - A temporal geodatabase - A temporal geodatabase Use of temporal data Use of temporal data Feedback - An ArcMap Add - In plugged to the editing tools Conclusion - Quality control tools - Quality control tools GWF 2014
Temporal geodatabase The concept : feature classes + temporal attributes, Event table Each object has a lifetime tracking its evolution Events used to log modifications on the objects statistics GWF 2014
ArcMap Add - In plugged to the editing tools Data management workflow : - The ArcMap Add - In is seamlessly integrated with the initial process GWF 2014
The Add - In user interface Visualization of the changed objects Logging an event for each object Saving the objects into the temporal database GWF 2014
The Add - In user interface 4D in action ! Introduction Context Technical description Use of temporal data Use of temporal data Feedback Conclusion GWF 2014
Use of standard ArcMap tools Use the time slider to visualize the evolution of data Introduction 4D in action ! Context Technical description Use of temporal data Use of temporal data Feedback Conclusion GWF 2014
Control tools using temporality Two monitoring and data query tools have been Introduction developed and deployed at DMO developed and deployed at DMO Context 1. Visualization of the modifications : Technical description Use of temporal data Use of temporal data - Highlights on the map all the updates made in the - Highlights on the map all the updates made in the Feedback current session Conclusion - Export them into a csv file - Export them into a csv file GWF 2014
Control tools using temporality 2. Visualization of the temporal data : Introduction - Query the Event table (attributes only) Context - Visualize the corresponding geographical objects on Technical description the map the map Use of temporal data Use of temporal data Feedback Conclusion GWF 2014
Feedbacks / Conclusion The tem porality tool is used successfully for m ore than a Introduction year year Context All the data m anaged by DM O, 90 entity classes, are tim e- Technical description enabled and : enabled and : Use of temporal data Use of temporal data - Any change in the cadastral database is logged and Feedback Conclusion historized - The new process is fully integrated with the initial workflow ; - The new process is fully integrated with the initial workflow ; this new tool has a minor impact on the every day work of the DMO operators GWF 2014
Feedbacks / Conclusion DM O is a pioneer in cadastral data historization Introduction Context Technical description The application is highly flexible: its principle can be Use of temporal data Use of temporal data applied : applied : Feedback Conclusion To other topics To other GIS clients (for instance QGIS) To other GIS clients (for instance QGIS) The new version supports historization for 3D objects Other departments are interested in deploying this tool for their projects GWF 2014
Contact David Beni CEO CEO Annick Deshayes Project manager arx iT SA arx iT SA www.arxit.com
Recommend
More recommend
