introduction to open source gis

Introduction to Open Source GIS

Sept, 2017

Mr. Shin, Sanghee

Capacity Building For National Surveying and Geographic Information Institute

Lecturer

Name: Shin, Sanghee

Department: Gaia3D, Inc.

Contact: 010-9686-2630

E-mail: [email protected]

<Education Background>

- Seoul National University

- KAIST

<Short Biography>

- Chair of International FOSS4G Conference, 2015

- Board of Directors, OSGeo Foundation, 2015

- Chair of Technical Advisory Group of UN Open GIS Intiative, 2016

mailto:[email protected]

ICHAPTER

Overview of Open Source SW

IICHAPTER

Open Source GIS

IIICHAPTER

Open Source GIS Projects

CONTENTS

IVCHAPTER

OSGeo – Open Source Geospatial Foundation

VCHAPTER

Wrap-Up

Source: https://www.youtube.com/watch?v=IeTybKL1pM4

https://www.youtube.com/watch?v=IeTybKL1pM4

01 l What is OSS?

02 | SW Models

03 | Benefits of OSS

04 | Why Select OSS?

Overview of Open Source SWI.

7

1. What is Open Source SW? Open source SW(OSS) is the computer SW that is available in source code form under certain licenses.

Users of OSS are permitted to use, copy, study, change, improve and even redistribute those OSS freely.

‘Free’ does not mean ‘Free of Charge’ but ‘Freedom’ or ‘Liberty’

Freedom

Of

Software

Freedom

of

Redistribute

Freedom

of

Modify

Freedom

of

Copy

Freedom

of

Use

8

2. SW Models – Cathedral vs. Bazaar

Cathedral Bazaar

Leverage own knowledge Leverage others knowledge too

<Closed Development> <Open Development>

Designed and developed by inside R&D lab

Inside knowledge, intellectual property, experiences

Idling knowledge, limited leveraging outside knowledge

Designed and developed with other outside partners

Inside knowledge + outside knowledge

‘We are smarter than Me!!’

In-House

Development

Collaborative

Development

Leveraging inside & outside knowledge

Open Source Software Development Model

9

3. Benefits of Open Source SW Benefits of Open Source Software

Empower people, save money, save resources, increase stability, access to source code, access to skilled

community of developers

Develop the society by sharing technology & outcomes!!

1. Technological

Aspects

2. Economical

Aspects

3. Business

Aspects

4. Other

Aspects

Rapid development of high-

class SW

Increased stability by skilled

community review

Reduce technological gap

to leading proprietary SW

company

Internalize outside SW

developer resources

Very low adoption cost

Reduce SW development

cost

Easy to customize

Reuse successful story

Extend company’s

products portfolio

Open up new market by

providing diversified

services & products

Improve brand image of

company

Reduce energy

Self-Satisfaction

Help society

10

4. Reasons Why Select Open Source

Open Source Advantages over Commercial SW(2007)

Open source’s price tag is clearly important driver. OSS is practically cheaper than commercial one.

57% said that accessibility to source code really matters and 41% cited community code review as an

important benefit over proprietary.

80%

57%

41%

20%

18%

15%

15%

15%

10%

6%

5%

0% 20% 40% 60% 80% 100%

Price

Source Code Access

Community Code Review

Don’t Know

Bug Fix Turnaround

Security

Code Quality

Best Product Functionality

Easier to Adopt in Organization

Other

IP Protection

Price & open source code are key factors!

* Source : Barracuda Networks

11

4. Reasons Why Select Open Source Open Source as Better Quality Software(2013)

Source: BlackDuck Software, ‘2013 The Future of Open Source’

12

4. Reasons Why Select Open Source Open Source as Better Quality Software(2014)

Source: BlackDuck Software, http://www.slideshare.net/blackducksoftware/2014-future-of-open-source-survey-results

1

2

3

4

Quality

Security

Ease of Deployment

Source Code Access

http://www.slideshare.net/blackducksoftware/2014-future-of-open-source-survey-results

14

1. What is Open Source GIS? Open Source GIS

• FOSS4G : Free Open Source Software for Geo-Spatial

• GeoFOSS : Geospatial Free Open Source Software

15

2. Why Open Source GIS?

Current State & Needs of Open Source GIS

Boom-up of Open Source & Open Source GIS- Around 300 ~ 400 Open Source GIS projects are available (Freegis.org, 2011)

Advance of Open Source GIS- OSGeo Foundation : Commercial proprietary GIS SW can be replaced with Open Source GIS

- Google used Open Source based GDAL in its Google Earth program

- AutoDesk opend the source code of MapGuide, FDO & MetaCRS and then donated those to OSGeo

- ESRI actively used GDAL and also changed its ArcGIS GeoPortal Server to Open Source based one

Active adoption of Open Source GIS in UN, EU, USA , Canada and other countries

Current State

Want to meet lots of needs of GIS from public sectors

Want More with Less!!

Want to replicate other people & institution’s experience

Want to manage & modify the system by ourselves!!

Necessity

16

3. Characteristics of GIS

Characteristics of GIS

GIS = Vertical Set of Many Software

• Interoperability is very crucial among components

• Linux, Apache, PHP are Horizontal based Software

• GIS is Vertical Architecture based one from DB to web client

GIS as Public Infrastructure = Spatial Data Infrastructure

• Vendor neutral, standard based architecture is very important

• Active standardization by ISO, OGC

Open Source GIS as another Lego Block

• Active implementation of “Standard Compatibility” by Open Source GIS

• Open Source GIS could replace commercial proprietary SW/Components

17

4. GIS: Vertical Set of Many Software Characteristics of GIS : Vertical Set of Many Software

Data

DBMS

Server

Middleware

Interface

Client

Map Image DEM

Oracle PostgreSQL

ArcServer ArcSDE GeoServer MIP

ArcTMS TMS GeoWebCache

WMS WFS WCS CSW

ArcMAP Google Earth QGIS Web

18

5. Another Lego Block

Open Source GIS as Substitute for Proprietary Software

ArcReader

ArcMap/ArcGIS

ArcINFO/ArcGRID

ArcPad

ArcSDE

ArcIMS

ArcGIS Server

VB, Python

uDig, GRASS, gvSIG, QGIS, OSSIM

uDig, GRASS, gvSIG, QGIS, OSSIM

GRASS, OSSIM, SEXTANTE

gvSIG mobile

PostGIS

Mapserver, GeoServer, DeeGree

GRASS, SEXTANTE

PHP, Python, Perl, C#.net, etc…

Viewing

Cartography

Analysis

Devices

Database

Web

Spatial Server

Scripting

• Source : Prof. Kwangwoo Nam

19


FOSS4G Projects under OSGeo Umbrella

Geospatial Libraries

Web Mapping

Desktop GIS

Metadata Catalog

20


C Tribe

OGR/GDAL

Mapserver

GRASS

PostGIS

OSSIM

Proj4

GEOS

QGIS

GMT

TerraLib

MapGuide

FDO

• Source : Tyler Mitchell

21


Java Tribe


GeoTools

OpenMap

GeoServer

JTS

Topology

Suite

JUMP

uDig

DeeGree

gvSIGGeoAPI

22


.Net Tribe


Proj.NetWorldWind

NTSSharpMap

MapWindow

GDAL

Proj4

JTS

OGR

23


Web Tribe


MapBender

TileCache

MapBuilder

CartoWeb

PostGIS

WMS

Mapserver

OpenLayers

FeatureServer

Ka-Map

Geoserver

GeoExt

MapFish

OpenScales ExtJS

24

JSTS

shapely

JTS Topology Suite(Geometry Engine)

Source: http://www.osgeo.org/files/tyler/images/siglibre_foss_sig_relacion.html

25

6. Rising of Open Source GIS

Google Trends Analysis

* Source: http://www.google.com/trends/

ArcMap

QGIS

01 l FOSS4G Based NSDI

02 | Real Cases

03 | Korean Cases

04 | Open GeoData

Open Source GIS ProjectsIII.

27

1. FOSS4G Based NSDI

FOSS4B Based NSDI Architecture

28


FOSS4B Based System Architecture

Data

DBMS

Server

Middleware

Client

Open Street Map Open Aerial Map GeoNames

PostGIS

MapServer MapGuide GeoServer Deegree

Squid TMS GeoWebCache

QGIS

uDIG

Open Layers GeoExtMap Window

OWS Interface

World Wind LeafletOpen Scales

GRASS GeoNetwork

29


EU : INSPIRE

EU : INSPIRE

• Hybrid model mixing proprietary and foss4g

30

2. Real Cases

Geo Bolivia

• Pursuing Open Source GIS based NSDI

31

2. Real Cases IGN, France

Managing more than 100M spatial entities using PostGIS

http://www.ign.fr

32

2. Real Cases MassGIS, USA

Using PostGIS, GeoServer, GeoExt with ESRI Products

http://maps.massgis.state.ma.us/map_ol/moris.php?Yes=Yes

33

2. Real Cases MassGIS, USA

34

2. Real Cases United Nations Open GIS Initiative

From ‘More with Less’ to ‘Better with Less’

35

2. Real Cases

TD of Spiral 1 on Sep, OD of Spiral 1 will be on November.

United Nations Open GIS Initiative

• 2 times meeting was held and 3rd meeting will be held on November

36

3. Korean Cases Open Source GIS Adoptions in Korea

http://arirang.kari.re.kr

http://dev.grida.kr:8080/COMIS4P/map/map.jsp

http://dev.grida.kr:8080/MINE

37

3. Korean Cases NSDI Portal

http://www.nsdi.go.kr/ http://www.gmap.go.kr

OpenLayers was used as main web client!

38

3. Korean Cases

Korea Aerospace Research Institute and Korea Meteorological Administration

GeoServer, GWC, OpenLayers

http://arirang.kari.re.kr http://gis.kma.go.kr/COMIS4P/map/map.jsp

http://arirang.kari.re.kr

http://dev.grida.kr:8080/COMIS4P/map/map.jsp

http://arirang.kari.re.kr/

http://gis.kma.go.kr/COMIS4P/map/map.jsp

39

3. Korean Cases

GeoServer, GWC, Squid, OpenLayers

[Smart Phone] [FOSS4B based Transport Information Service System Architecture]

National Transport Information Center

40

3. Korean Cases

Site Suitability Analysis for Investment

PostGIS, MapServer, Open Scales

• Analysis Menu

• Analysis Results Window

41

4. Open GeoData

OpenStreetMap

OSM is made & published by people’s participation!!

42

4. Open GeoData

OpenStreetMap Activities for Typhoon Haiyan (2013)

01 l OSGeo

02 | Goal & Activities

03 | Incubation

04 | Conferences

OSGeo IV.

44

1. OSGeo – Open Source Geospatial Foundation

OSGeo - Open Source Geospatial Foundation

• Established in Chicago, US on 4th

February, 2006.

• Mission : To support the collaborative

development of open source

geospatial software, and promote its

widespread use.

• OSGeo is a NPO that is functioning as

community of communities.

OSGeo General

45

2. Goal & Activities Goal & Activities of OSGeo

Goal Activities

Provide resources for FOSS4G projects

- Infrastructures

- Legal

- Financial

Promote free and open geospatial data

Create and maintain a quality brand

Create and promote free curriculum

Promote and contribute to standards

Support FOSS4G on a global scale

Support local activities and capacities

Facilitate inter-project communication

Build a solid market for business and users

Interface with industry and academia

Support the education of domain experts not

<brand specialists>

http://www.osgeo.org

http://www.osgeo.org

46

2. Goal & Activities OSGeo Live - Enterprise Ready Open Source GIS Stacks

47

3. Incubation

OSGeo Incubation

• Efforts for ensuring high quality open source GIS development

• A kind of project health inspection

Have a successfully operating open and collaborative development community1

Have clear IP oversight of the code base of the project2

Adopt the OSGeo principles and operating principles3

Are mentored through the incubation process4

48

4. Conferences FOSS4G Conference

• Annual largest open source GIS conference hosted by OSGeo

• FOSS4G 2017 was held at Boston and FOSS4G 2018 will be held at Dar es Salaam

Image source: https://www.flickr.com/groups/2926401@N22/pool/

49

4. Conferences Regional and Local Conferences

• FOSS4G Asia, FOSS4G NA, FOSS4G Europe, and FOSS4G Africa as regional FOSS4G

• More than 15 local FOSS4G conferences

01 l Pros & Cons

02 | Commercial Open Source GIS

03 | Wrap-up

Wrap-UpV.

51

1. Pros & Cons

Economic Advantages – More with Less!

Hardware

Software

Overhead

System

Integration

Hardware

Software

Overhead

System

Integration

Additional

Development

<Previous Cost Structure> <FOSS4B based Cost Structure>

• Additional development

• Could increase jobs

• More with Less

• Users can focus on their

own job instead of

spending SW/HW

52

1. Pros & Cons Social Advantages – Capacity Building

• Free access to open source GIS

• Source access to open source GIS

Image source: Gérald Fenoy, https://www.facebook.com/gerald.fenoy

53

1. Pros & Cons

Proprietary

Software

Open Source

Software

“Software of the developers, by the developers, for the developers”

Highly depends on network effects

Less economical incentive could reduce the sustainability of a project

Downside of Open Source GIS

54

1. Pros & Cons

Downside of Commercial Proprietary Software

ProprietarySoftware

Open SourceSoftware

“High Price” is always headache to users Can be locked-in to non standard format or protocol Black box could hinder knowledge diffusion

55

2. Commercial Open Source GIS Companies

56

3. Wrap-up

• Open Source GIS is basically free.

• The price of commercial Open Source GIS is lower than proprietary oneCost Reduction

• Almost all the Open Source GIS is compliant with OGC standards

• Open Source GIS can be used with existing proprietary GISInteroperability

• Anybody can modify & upgrade the system from the source code level

• Can easily replicate or migrate success cases to their system

Opened Source Code

• Collaboration, sharing & community based SW development model

• Source code will be managed by community not by company

• Neutrality from specific technology or company

• Anybody can join and contribute to Open Source GIS with OSGeo

Collaboration based SW

• Open Source GIS is now comparable with commercial proprietary GIS

• Open Source GIS is now actively adopted & used all around the world

Advance of Open Source

GIS

Thank You!

introduction to open source gis

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