The 52°North Web Processing Service

The 52°North WPS

Benjamin Pross, Daniel Nüst

Workshop Geoprocessing on the Web, AGILE 2014

52N WPS Feature Frenzy @ AGILE 2014 2

Project Factsheet

Started: January 2006

Last version: July 2013, v3.2.0

2-3 Developers, 7 contributors

Docs: Api, Wiki, Workshops

Open Source (GPLv2): http://github.org/52North/WPS

Ohloh: http://www.ohloh.net/p/n52-wps


Feature Overview

● Supports all features and operations of WPS specification version 1.0.0

● Support for several processing backends:○ GRASS 7○ Sextante○ R○ ArcGIS Server○ Java○ Python○ Matlab (new!), supports streaming

● Java Process/R script upload via Web UI● Experimental Transactional Profile (WPS-T)● Store process outputs in Geo-/MapServer● Streaming of process in-/outputs

○ Academic demonstration, uses QGIS Client, currently a branch


Java Processing Backend

Fast & easy process creation using Java annotations

Automatic creation of process description

Automatic (un-)marshalling of inputs/outputs

Upload via Web Console


wps-js

GitHub: https://github.com/52North/wps-js

JavaScript WPS Client

Based on OpenLayers API

(Live demo with WPS4R)

https://github.com/52North/wps-js


WPS4R

• Semi-automatic creation of WPS processes out of R-scripts

• User needs to annotate inputs/outputs

• Rserve is used to execute scripts• Upload via Web Console

Live demo


Grass 7 process repository

• Grass 7 process repository– Core modules– Addons supported

• Uses wps-grass-bridge by Sören

Demo videoLines of sight algorithm with ArcGIS client See also• http://grass.osgeo.org/grass64/manuals/r.los.html• https://wiki.52north.org/bin/view/Geoprocessing/

EDCDevForumWorkshop-07-2013#Raster_data_processing


Features (cont‘d)

• GeoServer upload– Store process outputs in local/remote

GeoServers• Matlab connection with streaming

– https://github.com/autermann/matlab-wps

– https://github.com/autermann/streaming-wps


USGS Geo Data Portal


Spacebel WPSGetStatus and Cancel operations for flexible process handling

DeployData, UndeployData and DescribeData operations for discovery and handling of auxiliary data (e.g. a landuse layer)

GetAudit for accessing processing execution traces.Transactional backends (a.k.a. repositories) for Apache ODE as a process manager for workflows and the JavaSAGA process manager for Grid processes.

Callback feature for asynchronous status updates (without polling) about process completion and failure, which enables efficient workflows, for example if several web services are chained.

http://ode.apache.org/

http://saga-project.github.com/


INTAMAP• Real-time mapping of environmental

radioactivity• WPS provides automatic Kriging

interpolation


Upcoming developments

WPS 4.0 ideas and conceptsPractical applications with WPS4RNew Admin interface (GSoC 2013)

Join!Trello board: https://trello.com/b/BNLdKv1U/new-wps-featuresWiki: https://wiki.52north.org/bin/view/Geoprocessing/StructuresAndProcedures


Summary

Open source – contributions welcome!http://52north.org/about/get-involved

Standardized (OGC: BPR, MMÜ)

Stable Java libraries (JTS, geotools, XMLBeans)

Used in productive environments (ESA, USGS)

Manifold processing back-ends


Try it!

http://live.osgeo.org/

http://live.osgeo.org/en/overview/52nWPS_overview.html


More information:

http://52north.org/wps

http://geoprocessing.demo.52north.org

The 52°North Web Processing Service

Software

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