Web GIS is a type of distributed information system, comprising at least a server and a client. Here I've discussed about different elements and components, characteristics of Web GIS, WMS, WFS, WPS. Lastly practical example of Web GIS using QGIS and Google Map.

1. Presented By: Indranil chakraborty
M.Sc in Geospatial Science
The University Of Burdwan

2. Content
 Geographic information system
 Web GIS
 Elements of web GIS
 Web-GIS Architecture
 Differents layers of Web-GIS
 Basic Components of Web-GIS
 Characteristics of Web-GIS
 WMS, WFS, WPS
 Data for Web GIS
 Examples Of Web GIS using QGIS
 Examples Of Web GIS using Google My Map
 Reference

3. A geographic information system (GIS) is a framework for gathering, managing, and analyzing data.
Rooted in the science of geography, GIS integrates many types of data. It analyzes spatial location and
organizes layers of information into visualizations using maps and 3D scenes.
What do you think about GIS
GIS
Desktop GIS Web GIS Mobile GIS

4. Web GIS is a type of distributed information system, comprising at least a server and a client,
where the server is a GIS server and the client is a web browser, desktop application, or
mobile application.
Web GIS

5. Here are a few key elements essential to web GIS:
 The server has a URL so that clients can find it on the web.
 The client relies on HTTP specifications to send requests to the server.
 The server performs the requested GIS operations and sends responses to the client via
HTTP.
 The format of the response sent to the client can be in many formats, such as HTML,
binary image, XML (Extensible Markup Language), or JSON (JavaScript Object
Notation).
key elements of web GIS

6. Thick client architectureThin client architecture
Web-GIS Architecture

7. The generic layered architecture of Web GIS, consists of three layers namely user
Interface layer:
The clients access the system by interacting with the user interface layers that takes the input
and shows, the output of the system.
Application layer:
The application layer provides the map visualization functions like panning, zooming etc. It
provides the others functions also.
Database layer :
The database layer handles the data present at distributed sources.
 These three elements may reside in the same machine or in different machines.
Differents layers of Web-GIS

8. Basic Components of Web-GIS

9.  A global reach
 A large number of users
 Better cross-platform capability
 Low cost
 Easy to use for end users
 Unified update
 Diverse applications
Characteristics of Web-GIS

10. WMS, WFS, WPS
1. Web Map Service (WMS)
2. Web Feature Service (WFS)
3. Web Processing Service (WPS)
(1) (2)

11. Data for Web GIS

12. Examples Of Web GIS using QGIS

13. Examples Of Web GIS using Google My Map

14. Reference
https://www.esri.com/en-us/what-is-gis/overview
https://grindgis.com/blog/components-of-gis
https://enterprise.arcgis.com/en/server/latest/create-web-apps/windows/about-web-
gis.htm
https://drive.google.com/open?id=1DmvlhvjFzCNjKzCDYff5OqUaJdrDp6oD
https://www.slideshare.net/StigArneKristoffersen/web-based-gis