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GIS: Geographic Information Systems
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A geographic information system (GIS) is a computer system for capturing, storing, checking, and displaying data related to positions on Earth's surface.
A geographic information system consists of integrated computer hardware and software that store, manage, analyze, edit, output, and visualize geographic data.

The three types of GIS Data are: spatial, –attribute, & —metadata
vector data.
raster or grid data (matrices of numbers describing e.g., elevation, population, herbicide use, etc.
images or pictures such as remote sensing data or scans of maps or other photos.
GIS: Geographic Information Systems
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25 Questions

1. Regulary spaced sample of points representing a surface.

2. 1. E - Ellipsoid dimensions. 2. D - Datum origin. 3. A - Angular alignment.

3. Google Maps or Microsoft Bing.

4. The 5 __________: TTCETH - 1. Triangle table 2. Triangle-Node table 3. Coordinate table 4. Triangle-Edge table 5. Hull-Edge table.

5. Global Positioning System.

6. Understand spatial relations between landmarks>shortcuts.

7. Map in which some thematic mapping variable is substituted for area (like a graph in a map)

8. Application Programming Interfaces (increases access like my maps on google).

9. User generated content (UGC). Volunteered geog. info (VGI). Professional vs amateur. Neogeography vs GIS.

10. 2 reasons why Topology matters: 1. Error detection. 2. ___________.

11. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.

12. 1. An array of regulary spaced cells or pixels. 2. Each cell holds attributes (values).

13. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.

14. Explanatory list of symbols on a map

15. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km

16. A process of mathematical conversion.

17. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.

18. Files in the DB can be linked or joined using the _______

19. _________ of the Real World: (S&E - S&S - G&A) 1. Selection & Elimination. 2. Simplification & Smoothing. 3. Generalization & Aggregation.

20. Assigning location information to text & discourse.

21. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.

22. Townships were six miles square - and were subdivided into 36 sections - each section consisting of one square mile. One section of each township was set aside to support public education - and the remaining sections were to be sold at public auction

23. Smoothing & Shape abstraction.

24. Consists of F & E: 1. Features. 2. Entities.

25. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.

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