Spatial Analysis

Question 1

GIS

Answer 1

Geographic Information Systems. Broad term for computerized mapping systems and data.

Question 2

Raster data

Answer 2

Data represented as a regular grid of cells that have different values (temp. overlay, etc.)

Question 3

Vector data

Answer 3

Data represented as points, lines, and polygons in a GIS system.

Question 4

Digitizing

Answer 4

Creating mapping data by tracing over old maps, photos, etc.

Question 5

Georeference

Answer 5

The way that GIS systems maintain locational accuracy. May use lat / long.

Question 6

Themes (GIS)

Answer 6

The type of map you are trying to make. I.E. Watersheds, location of medical services, vineyards, etc.

Question 7

Layers (GIS)

Answer 7

A data layer which gives some set of information. (Base layer, water features, roads, etc.)

Question 8

Attribute (GIS)

Answer 8

Information about an object or feature. Represented in a data table.

Question 9

GPS

Answer 9

Global Positioning System. Satellite-based navigation system ran by the US government.

Question 10

TIGER (GIS)

Answer 10

Topographically Integrated Geographical Encoding and Referencing map. Used for census data mapping.

Question 11

DEM (GIS)

Answer 11

Digital Elevation Models. Show digital data about elevation.

Question 12

LIDAR

Answer 12

Light Detection and Ranging. Use of lasers to gather information on earths surface or surroundings.