Geographical Information System · Unit 9
Data Formats and Management
Exam-focused notes for Data Formats and Management (Geographical Information System, BIT355): what the TU syllabus asks and how it has actually been tested, with 2 solved past questions from this unit.
What this unit covers
- Shapefile format
- Advantages of shapefiles
- GPS data import
- Shapefile creation from GPS data
- Data format conversion
Advantages of shapefiles
What are the main advantages of using shape files? [5]
1. Simple and Widely Supported Format - Shape files are one of the most commonly used vector data formats in GIS - Supported by virtually all GIS software (ArcGIS, QGIS, PostGIS, etc.) - Ensures broad compatibility and ease of data sharing across platforms ...
Full solved answer →Shapefile creation from GPS data
What is projection? How do you import GPS file to make shape file. Explain the steps. [5]
Projection is the process of representing the three-dimensional surface of the Earth (a sphere or spheroid) onto a two-dimensional plane (map). Since it is mathematically impossible to represent a curved surface perfectly on a flat surface without distortio...
Full solved answer →Make Unit 9 stick
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