This page lists Case Studies of projects that include Geospatial Open Source components.
- 1 Case Studies
- 1.1 OSGeo Journal
- 1.2 Evaluation of FOSS4G software projects
- 1.3 Web Clients
- 1.4 Web Client Comparison
- 1.5 Desktop Clients
- 1.5.1 Review of Open Source Desktop Clients
- 1.5.2 Compare ArcGIS against Open Source GIS Desktop
- 1.5.3 Email threads discussing merits and disadvantages of OSGeo Desktop
- 1.5.4 GRASS
- 1.5.5 uDig Case Studies
- 1.5.6 QGIS Case Studies
- 1.6 Web Services
- 1.7 Databases
- 1.8 Complete Infrastructure
- 1.8.1 Open Source in Cadastre and Land Registration
- 1.8.2 Valencian Regional Ministry of Infrastructure and Transport
- 1.8.3 Hydrographic Confederation of Guadalquivir River, Spain
- 1.8.4 ROI from Geospatial Open Standards, study by NASA
- 1.8.5 Predicted ROI for Australian Government to investment in a SDI
- 1.8.6 Predicted ROI for New Zealand Government to investment in a SDI
- 2 Open Data
- 3 Open Source Policies
- 4 Why write a Case Study?
- 5 What to write?
- 6 How to publish?
The OSGeo Journal includes many international Case Studies and introductions to OSGeo software.
- List of all article titles in the journal here
Evaluation of FOSS4G software projects
CASCADOSS results on the evaluation marketing, technical and economical aspects of FOSS4G software projects. . The CASCADOSS project evaluated 51 of inventoried 98 FOSS4G software projects from 5 categories: desktop GIS/RS applications, server applications, spatial databases, development libraries and general interest projects. The CASCADOSS website provides an open framework for custom evaluations, allowing comparisons between projects to find best solution. The issues related to change from proprietary to OS GI software is also addressed.
Web Client Comparison
- November 2009, Web Map Client comparison, http://geotux.tuxfamily.org/index.php?option=com_myblog&task=view&id=239&Itemid=59&lang=en
Table of cross project feature table.
- OpenLayers Case Studies. A collection of OpenLayers studies maintained by the OpenLayers community.
- President Obama's "Delivering On Change" website uses OpenLayers and OpenStreetMaps. http://www.whitehouse.gov/change/
- The Mapbender community maintains the Mapbender Gallery with a list of solutions for specific domains ranging from city map services through specific applications to full scale geoportal implementations.
Review of Open Source Desktop Clients
- April 2008 http://www.spatialserver.net/osgis/ - A comprehensive feature by feature comparison of all the Open Source desktop clients.
- Municipality of Trento (Comune di Trento), Italy, migration (2005-today): especially improvements in GRASS GIS are financed: new digitizer tool and better high quality cartographic output.
- 2010: "Matrix on OSGeo and COTS software functionality"
Compare ArcGIS against Open Source GIS Desktop
Compares ArcGIS against GRASS, QGIS, uDig, gvSIG,OpenJUMP, and MapWindow for the Library domain.
- "Each of the individual FOSS GIS packages had their own particular strengths and weaknesses and some performed well for thematic mapping. The FOSS packages generally were weaker compared to ArcGIS in terms of support for various projection and coordinate systems, joining attribute data to GIS files, and automatic labeling, but their advantage is that they were free in terms of cost and licensing restrictions. When coupled with plug-ins and helper applications the viability of the FOSS GIS packages increased."
Email threads discussing merits and disadvantages of OSGeo Desktop
18 April 2008: Geowanking: ArcView 3.1 replacement
"[Oxford Archaeology] are looking at gvsig and qgis as the main options [for ArcGIS], gvsig because it can use cad data, and qgis because we like the grass integration and it's slightly more user-friendly for english speakers (the translated version of gvsig still has some spanish bits in it). With slight changes to our work-flows, we are finding that these two packages will do almost everything we need a gis to do, with the exception of producing high-quality illustrations. To achieve this we are currently looking at export to svg or postscript for final editing in inkscape, but that's a work in progress."
This email thread provides numerous opinions for and against using Open Source Geospatial Software.
I think it's contingent on us as evangelizers to not over-sell. I would not recommend QGIS or any other open source desktop to someone whose prior experience was Arc* until I had a clear understanding of the use case. In response to the query "can I replace ArcView with open source", my answer is "in general, no, but maybe for a specific use case".
I've been an ESRI user (AV 3.x, ArcGIS 8/9, ArcIMS, ArcGIS Server, ArcSDE) for 12+ years and have recently started exploring FOSS software. And I haven't disagreed with any of the responses so far. You will definitely need multiple programs to do what a single ESRI program can do. IMO, this is a good thing. One of the main reasons for my migration is I'm tired of running large, complicated, expensive software and all the extra baggage that comes with it to use only 10% of what the software can do. (see ArcGIS Server.)
You can do all the analysis and more of ArcGIS Desktop and extensions using GRASS, QGIS, SAGA, GeoTools, GDAL/OGR, PROJ4, or R Statistics along with a programming language like Python, Java or others. (IMO, this is a better solution than ESRI.) You can do just about anything you want on the web server end with MapServer, GeoServer, FeatureServer (and maybe TileCache or GeoNetwork for metadata) with any of a dozen or more clients (OpenLayers, ka-Map, MapGuide etc...). And you can do a lot of database work with Postgres/PostGIS, a much simpler, less costly solution than ArcSDE+RDBMS. And I wouldn't count out the role of free, non-open source packages like Google products and Oracle Express (11g should have Spatial included.)
From my experience (limited in the FOSS world), I have found three basic hurdles:
- Cartography. Whether on the screen, PDF outputs, or print publications, ArcMap is easy and looks great. (Although R Statistics produces better looking charts and graphs than ArcGIS.)
- Versioned editing. This is important for groups with multiple concurrent editors or that has a particular hierarchical workflow with their GIS data.
- Storage and serving of very large (50+ GB) raster datasets. PostGIS does not support rasters yet; Oracle Spatial does though. I'm still not sure if storing rasters in a database is a good idea but ArcSDE sure makes it easy, and with good performance when used in conjunction with other ESRI products.
Current work addressing Open Source holes include:
GRASS64 with ArcGIS93 in education at North Carolina State University
GRASS vs SAGA
ARCGIS 9.0 vs GRASS 6.0
August 2005, Comparison of ARCGIS 9.0 and GRASS 6.0
Todd Buchanan's master thesis compared ArcGIS 9.0 and GRASS 6.0 for a use case: "Characterization of Urban Sprawl for Eugene-Springfield, Oregon". He took detailed notes using both and found "ArcGIS is more straightforward than GRASS. However, GRASS proved itself fully capable of performing the operations required by the case study and outperformed ArcGIS in several categories."
Note: GRASS is even better now and has been integrated with the user friendly qgis since this study.
uDig Case Studies
http://udig.refractions.net/gallery/ Collection of uDig case studies put together by Refractions.
QGIS Case Studies
http://qgis.org/en/community/qgis-case-studies.html Collection of QGIS case studies.
25 September 2007. Powerpoint presentation from FOSS4G Conference
The Army Corps successfully integrated a Proprietary Oracle Database, ARC SDE and Analysis tools, with Open Source WMS and WFS services, and free viewers like Google Earth and Google Maps.
Use of MapServer, Ingres and GMT among other tools by the BGR (a German institute responsible for the monitoring of the Comprehensive Nuclear Test Ban Treaty).
Gallery of GeoServer installations with the occasional showcase of interesting technology or integration.
Let's use this page to list sites that use MapServer, until a formal gallery is developed.
Gallery of spatial data infrastructures based on deegree web services and clients.
PostGIS Case Studies
A collection of PostGIS Case Studies collected by Refractions. http://postgis.refractions.net/documentation/casestudies/
PostGIS versus MySQL Spatial
In speed, PostGIS wins but not by orders of magnitude. The amount of functionality in MySQL Spatial remains very very small. You can do simple store-and-retrieve operations. Many of the spatial operations that are standard in full spatial databases don’t exist or are (confusingly, as some users have commented) stubbed out against bounding box tests instead. http://docs.opengeo.org/geospiel/2009/06/16/postgis-versus-mysql-spatial/
Open Source in Cadastre and Land Registration
FLOSS in Cadastre and Land Registration - Opportunities and Risks Compiled by The International Federation of Surveyors (FIG) in conjunction with the United Nations Food and Agricultural Organisation (FAO).
The publication provides an overview of open-source software applicable to cadastre and land registration, as well as practical case studies from countries using Open Source in this area.
in Spanish (view English translation by Google)
Valencian Regional Ministry of Infrastructure and Transport is under a project of migrating "all" systems to open-source software. As a matter of fact, that was the reason to build gvSIG. All geospatial infrastructure (previously with ESRI) has been moved to open source (gvSIG, PostGIS, MapServer, deegree, GeoNetwork opensource).
There is a final report (PDF in English) of the gvPontis project.
in Spanish (view English translation by Google)
A migration of a big part of ESRI components to open-source has been made, with use of gvSIG, GeoNetwork opensource, MapServer, GeoServer, deegree.
ROI from Geospatial Open Standards, study by NASA
National Aeronautics and Space Administration Geospatial Interoperability Office studied the Return On Investment from using Geospatial Open Standards. The study showed "There is a significant improvement in functionality and mitigation of cost when using open as opposed to proprietary standards. The project that implemented geospatial interoperability standards had a risk-adjusted ROI, or "Savings to Investment" ratio, of 119.0 percent throughout the five-year project life cycle."
Predicted ROI for Australian Government to investment in a SDI
ACIL Tasman study reports a 10 to 20 times ROI should the Australian government invest in a Spatial Data Infrastructure.
Predicted ROI for New Zealand Government to investment in a SDI
August 2009 ACIL Tasman, Spatial Information in the New Zealand Economy
"... open source solutions are increasingly used in implementations of SDIs and the New Zealand Government should thoroughly explore how open source solutions can be employed because of the potential advantages in cost and replicability."
Open Data Licensing in Australian Government
80% of Queensland, Australian government data can be opened up under Creative Commons, and the remaining data is planned to be released under an extensions to the Creative Common license.
Open Data for Victorian state Government, Australia
The Victorian Parliament’s Economic Development and Infrastructure Committee (“EDIC”) recommends the freeing of access to Public Sector Information at no or marginal cost.
"To give effect to the constitutional right of access to any information held by the State and any information that is held by another person and that is required for the exercise or protection of any rights; and to provide for matters connected therewith."
"To establish the South African Spatial Data Infrastructure, the Committee for Spatial Information and an electronic metadata catalogue; to provide for the determination of standards and prescriptions with regard to the facilitation of the sharing of spatial information; to provide for the capture and publishing of metadata and the avoidance of duplication of such capture; and to provide for matters connected therewith."
Open Source Policies
These documents provide compelling reasons for selecting Open Source and Open Standards.
It can offer original solutions to problems not addressed by proprietary software and it has the potential to lead to significant savings in Government expenditure on information and communications technology (ICT).
13 March 2008, Ministry of Justice Open Source Strategy Paper
Proposes when Open Source should be used over Proprietary software, and concludes that Open Source better than Proprietary, all other things being equal.
The South African Government through its Open Source Project Office and the State IT Agency (SITA) is active with open source and interoperability policy development and implementation.
Browse and download most of the important documents HERE.
The South African FOSS Policy which was approved in 2007 urges government to implement FOSS:
- Choose FOSS: The South African government will implement FOSS unless proprietary software proves to be significantly superior. Whenever the advantages of FOSS and proprietary software are comparable FOSS will be implemented when choosing a software solution for a new project. Whenever FOSS is not implemented, then reasons must be provided to justify implementing proprietary software.
- Use FOSS/Open Content Licensing: The South African government will ensure all government content and content developed using government resources is made Open Content, unless analysis on specific content shows that proprietary licensing or confidentiality is substantially beneficial.
- Develop in FOSS: All new software developed for or by the South African government will be based on open standards, adherent to FOSS principles, and be licensed using a FOSS license where possible.
- Migrate to FOSS: The South African government will migrate current proprietary software to FOSS whenever comparable software exists.
- Promote FOSS in South Africa: The South African government will encourage the use of Open Content and Open Standards within South Africa. They will encourage the use of Open Content and Open Standards.
For more recent and additional content visit these sites:
February 2009, Government Policy on Open Source, Open Standards and Re–Use
Summarised highlights from the policy:
- Government procurement will fairly consider open source solutions alongside proprietary ones and will take into account total cost of ownership, including exit and transition costs.
- The Government will, wherever possible, avoid becoming locked in to proprietary software.
- The Government will require solutions to comply with open standards.
- Where appropriate, general purpose software developed for government will be released on an open source basis.
US Department of Defense
April 2006, US Navy Open Technology Development Roadmap Plan.
Describes how the US Navy will migrate to Open Technology Development when purchasing and building software.
Open Technology Development combines salient advances in the following areas: * Open Standards and Interfaces * Open Source Software and Designs * Collaborative/Distributive culture and the and online support tools * Technological Agility
Also, a much shorter news article on the same topic from March 2008. The Navy will acquire only systems based on open technologies and standards.
The Original Paper was stored here.
Open Source Software Economics
The Economic Motivation of Open Source Software: Stakeholder Perspectives]
Dirk Riehle. "The Economic Motivation of Open Source Software: Stakeholder Perspectives." IEEE Computer, vol. 40, no. 4 (April 2007). Page 25-32.
Why write a Case Study?
A case study discusses how a specific situation was identified, which solutions were investigated and selected, and a summary of the results.
Solution architects use relevant case studies to support a solution they are building.
Writing a case study about your project gives others the confidence to follow in your footsteps which in turn increases investment in your tools of choice. Publishing your experience gives positive feedback to those involved in your project, reinforcing your success, encouraging colleagues to take on additional challenges, allowing the project to continue to grow.
We would like to see case studies which cover a range of use cases, especially from organizations with a low risk tolerance. Many organizations approach Open Source in little steps gradually integrating it with existing infrastructure and find targeted small case studies valuable.
What to write?
One to three pages is good, with a graphic per page.
The case study should cover:
- Implementation, including integration with other infrastructure
- Problems faced and how they were overcome
- Return on Investment
- Future plans
- Who else might benefit from your experience
More hints found by googling: How to write a Case Study