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UID:pretalx-foss4g-2024-ZX3NWS@talks.staging.osgeo.org
DTSTART;TZID=-03:20241206T170000
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DESCRIPTION:In a humanitarian context\, data collection can be divided into
  two main categories: proactive collection of data that may be useful for 
 disaster response and recovery\; reactive collection that is required to a
 ssess the situation on the ground during an event.\n\nThe Humanitarian Ope
 nStreetMap Team has supported both types of mapping through the Tasking Ma
 nager platform. Going forward we will also be able to collect drone imager
 y collaboratively and add collected field-data to complement and match to 
 the remote data\, with the Drone TM and Field Mapping TM (FMTM) respective
 ly.\n\nThere are often major hurdles for field-based data collection:\n1. 
  	How to effectively collaborate with multiple data collectors at the same
  time.\n2.  	How to work when there is poor connectivity in an area.\n\nWe
 b applications may be an acceptable choice to solve the first issue\, but 
 typically perform poorly when subjected to the second.\n\nWith a new parad
 igm in web development\, local-first applications\, this may no longer be 
 an issue.\n\nWe can develop web-based applications that allow for both:\n-
           Real-time update for users undertaking collaborative data collec
 tion campaigns.\n-          Fully offline data collection capability\, wit
 h syncing and conflict resolution once connectivity is restored.\n\nThese 
 capabilities have been achieved through some major landmarks over time:\n-
           Addition of WASM to the browser in 2017.\n-          Implementat
 ion of databases in the web-browser (SQLite\, Postgres)\, using WASM.\n-  
         Introduction of smart data reconciliation mechanisms such as CRDTs
 .\n-          Continual improved access to mobile phones globally\, partic
 ularly in the introduction of high-performance smart phones.\n\nThis talk 
 explores our journey implementing a local-first field mapping flow\, with 
 an example and demo to demonstrate its efficacy.
DTSTAMP:20260505T233318Z
LOCATION:Room III
SUMMARY:Humanitarian data collection in browser-based Postgres - Ivan Buend
 ía Gayton
URL:https://talks.staging.osgeo.org/foss4g-2024/talk/ZX3NWS/
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