Open concept in GIS and open source software for GIS analysis. Geographical information system

1. An Introduction Of Open Concept In
GIS And Open Source Software For
GIS Analysis
Presented By: Binod .P. Poudel

2. Geographic Information
System(GIS)
(introduction to basics)
• A Geographical Information System is a
collection of spatially referenced data (i.e.
data that have locations attached to them)
and the tools required to work with the
data
• In General , Computer system for storing,
capturing, quering , analyzing and
displaying geographic data

3. Who Would Use GIS And Why?
Anybody who needs to work with spatially referenced data.
some examples are:
• Municipalities maintain large and complex databases that
contain the street locations,
• Hydro and phone companies use them to record locations
of their lines, both above and below ground, and for
deciding where to put new ones.
• Emergency services like 911 have to have a very detailed
municipal address database in order to route the vehicles
to the emergency as quickly as possible.

4. Introduction to open source software
TOPIC COVERED
• What is open source software
• Merits of using open source software
• Open source concept in GIS
• Benefits of using open source concept in GIS
• Open source software for GIS analysis

5. What is open source software?
• Open source software is software with source code that anyone can
inspect, modify, and enhance
• Users of open source software can permitted to use, copy, study,
change, improve and even redistribute
• Some of popular open source software are: Mozilla's Firefox web
browser, PHP scripting language , Python programming
language, Apache HTTP web server
(Source code : It's the code computer programmers can manipulate to change how a piece of software a program or
application works)

6. Benefits of using open source software
• people have more control over these kind of software. they can use these
software for any purpose they wish not merely the way someone else thinks
they should.
• These software are more secure and stable. Because so many peoples can
work on a piece of open source software without asking for permission from
original authors, they can fix, update, and upgrade open source software
more quickly
• These software has community. Open source software often inspires a
community of users and developers to form around it. In its community there
are the peoples who produce, test, use, promote, and ultimately affect the
software they love

7. Open source concept in GIS
Many industries and groups have benefited from open source technology and
GIS community is one of them. Open sources technology allowed new and
exciting ways to share geographic information. The creation of open source
mapping software has allowed for user from around the world to contribute what
they know about their neighborhood and local environment and help to create
better understanding of the whole world. In the past ,one expert would use large
amount of equipment in highly expensive expeditions to manage relatively small
part of world instead open source mapping software have a large amount of
users who can use the tech they already have like laptops, mobiles et-cetera to
do the same task.

8. Benefits of using Open
source concept in GIS
• Let's understand the benefit of open source
GIS with following case:
For example let's say a specific region of the
world is affected by a natural disaster and the
rescue team needs the map with the
information's like nearest medical stores,
hospitals, shortest routes and many more.
Because of the large community of open source
software users when this data is needed it can
be generated relatively quickly .And also these
platforms are open and hosted online the data
can be easily accessed when it is needed

9. Open Source
Software For GIS
Analysis
• SAGA GIS
• GeoDa
• GRASS GIS
• ArcGIS
• MapWindow
• FalconView
• OpenJump
• Maptitude
• QGIS

10. THANK YOU!
Any Questions?