Netek - On-screen Editing of Map Content via Web Browser in Real Time
1. On-screen Editing of Map Content via Web
Browser in Real Time
Rostislav NÉTEK
InDOG, Olomouc | 14/10/2014
2. Aim and motivation
Design and develop web map client
Crisis management support
Real purposes and real implementation
Fire Brigade
3. Web 2.0 + WebGIS
MAIRO I. (2013) WebGIS 2.0 principles and overview.
http://italomairo.italomairo.com/en/content/gis-web-gis-20-principles-and-overview.
Rich Internet Application
+
Service-oriented Architecture
WebGIS 2.0
4. Rich Internet Application
New generation of internet application
General concept, not concrete technology
AJAX, Silverlight, Openlaszlo, JavaFX, Flex, HTML5
Brings the tools, practices and conventions from desktop
platform
Fully web application
Esthetical features
5. RIA characteristics (+)
Run in the Web browser (both online and offline)
Combine properties from desktop applications into Web interface
No installation process required
Immediate feedback, refresh is not required
Rich content (video, sound, animation, vectors, drag and drop,
keyboard navigation, ...)
Platform independent
Faster processing of requests
Rich user interface
Focus on esthetical impression
Easy distribution and start-up
Mobile applications are fully supported and available
Open source
Wide possibility of customization
7. Adobe/Apache Flex
GIS ® Flex
Runs in the same environment like Flash
Flex is not Flash !
Allows to create highly interactive
Web mapping applications
Emphasis on desing
8. Service-oriented architecture (SOA)
General approach
Takes advantage from services
Service provider - Service consumer
Fully independent
Interoperability
OGC - standartization
Web services:
WMS, WFS,
WCS, WPS, CSW
KML…
9. SOA & web services
„Remote“ access – data located in computer or server
are not required
User can combines different layers from different
sources
Centralization - Data are stored at one place
Data are still updated
Software and/or platform independent
Only Web Browser required for visualisation
Security
Faster and more effective data management
Reduction of financial costs
10.
11. Transactional Web Feature Service (WFS-T)
WFS provide geodata as vectors
WFS enable visualization only
Transaction – editation purposes
Possibility of cascading
Parameters
GetFeatureWithLock
insertFeature
updateFeature
deleteFeature
12. Application concept – „Smart“ client
Open source solution by Esri
Flex client
ArcGIS Viewer for Flex (API)
Additional WFS-T widget
Enable „on-screen editing“ in real-time
Via web browser
Visualization, publication
editing and deleting
both spatial and attributes data
15. Testing
Step 1 –Stress test on the desktop. 10 clients
simultaneously on 10 PCs , cable Internet connection. No
significant decrease of loading. 5.5 sec/+- 2 sec.
Step 2 – Desktop with cable connection at the fire station
+ short discussion after relays…stable and intuitive. But
they did not use it during stress situation
Step 3a – On mobile device with WiFi. Failed.
Step 3b – Crack on Android tablet. WiFi, single client, no
significant decrease 12 sec/+-3.5 sec.
16. Done … ?
And what about mobile devices (Android, iOS)…?
17. What next…?
Non-RIA Flex HTML5/JS
Mobile devices support Partially No Yes
Vector graphic
No Yes Yes
3D graphic No Partially Yes
Transparency Partially Yes Yes
Rounded borders Partially Yes Yes
jQuery effects Yes No Yes
Plugins & widgets Partially Yes Yes
Advanced editing No Yes Partially
Cache Yes Yes Yes
Cloud computing
support
No Yes Yes
Comparison study
Other platform -> HTML5
ArcGIS API for JavaScript
Leaflet
18. Not only crisis management…
This presentation is co-financed by the European Social Fund and the state budget of the Czech Republic.
19. Thank you for your attention
rostislav.netek@upol.cz
http://www.geoinformatics.upol.cz
Palacký University in Olomouc, Czech Republic
