Post on 07-Aug-2018
8/20/2019 GIS Orientation
1/23
GIS (Geographic Information System)
Orientation
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
2/23
What is GIS?
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
3/23
What is GIS?
• GIS = Geographic Information System
– Links databases and maps
– Manages information about places
– Helps answer questions such as:• Where is it?
• What else is nearby?
• Where is the highest concentration of ‘X’?
•
Where can I find things with characteristic ‘Y’?• Where is the closest ‘Z’ to my location?
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
4/23
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
5/23
GIS
An integration of five
basic components
1. People
2. Data
3. Hardware4. Software
5. Procedures
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
6/23
GIS functions
• Capture
• Store
•
Query• Analyze
• Display
• Output
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
7/23
Capturing data
Hardcopy maps
Digital data
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
8/23
Sources of GIS Data
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
9/23
Storing data
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
10/23
Raster and vector data
The vector data model
represents geographic features
much the same way maps do –
using points, line, and areas. Any
(x,y) co-ordinate system
references real world locations.
Raster data model assigns values
to cells that cover coordinate
locations. This format is well
suited to spatial analysis and isalso appropriate for storing data
collected in grid format.
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
11/23
Query
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
12/23
Analysis
Proximity Analysis
Network Analysis
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
13/23
Display
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
14/23
Output
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
15/23
Application of GIS
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
16/23
Application of GIS
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
17/23
How can I use GIS?
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
18/23
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
19/23
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
20/23
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
21/23
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
22/23
Application of GIS to civil Engineering Projects
• Assignment:
Enumerate at least 10 applications of GIS toCivil Engineering Projects
Compiled By: Sujan Maka
8/20/2019 GIS Orientation
23/23
Compiled By: Sujan Maka