GEG 380: Week 1

What does the vector model in GIS represent real-world objects as?

Collections of points, lines, and polygons.

What are the geometric components of the vector model?

Point, line, polygon.

What represents a point in the vector model?

Nodes such as trees, poles, airports, and cities.

What do lines (or arcs) represent in the vector model?

Streams, streets, and sewers.

What do areas (polygons) represent in the vector model?

Land parcels and counties.

What does the raster model in GIS use to represent geography?

Cell matrices that store numeric values.

What is a satellite image essentially made of?

Pixels (picture elements).

How does resolution affect satellite images?

Higher resolution images are more accurate.

What is an advantage of open source GIS software?

Free access.

What is a disadvantage of open source GIS software?

Lower security and potentially more complex to use.

What fee do users pay for commercial GIS software?

A continuous licensing fee.

What is a major benefit of commercial GIS software?

User-friendly interface and professional tech support.

What is QGIS known for?

Being an open source GIS application.

What type of GIS software is designed for advanced users and installed on desktop/laptop?

Desktop GIS software, such as ArcGIS Pro and QGIS.

What type of GIS software is web-based and user-friendly for beginners?

Web GIS applications, like ArcGIS, Carto, and Mapbox.

What is the functionality of mobile GIS like Google Maps?

Provides GPS functionality for localized and real-time data.

What advanced capability does Geobrowser/Cloud GIS offer?

Runs spatial analysis on the cloud and supports global-based research.