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GIS midterm - Flashcards

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Class:GEOG 06555 - Geographic Information Systems (GIS) Topics and Applications
Subject:Geography
University:Rowan University
Term:Spring 2015
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Base map Map data over which other, thematic information is placed.
Reference map

A map designed to show where geographic features are in relation to each other.

Thermatic map

A map designed to convey information about a single topic or theme, such as     population density or geology.

Discrete data

Data that represents phenomena with distinct boundaries. Property lines and streets are examples of discrete data.

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Continuous data

Data such as elevation or temperature that varies without discrete steps. Since computers store data discretely, continuous data is usually represented by TINs, rasters, or contour lines, so that any location has either a specified value or one that can be derived.

Qualitative data

Data classified or shown by category, rather than by amount or rank, such as soil by type or animals by species.

Quantitative

Data grouped or shown by measurements of number or amount, such as population per unit area.

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 Base mapMap data over which other, thematic information is placed.
 Reference map

A map designed to show where geographic features are in relation to each other.

 Thermatic map

A map designed to convey information about a single topic or theme, such as     population density or geology.

 Discrete data

Data that represents phenomena with distinct boundaries. Property lines and streets are examples of discrete data.

 Continuous data

Data such as elevation or temperature that varies without discrete steps. Since computers store data discretely, continuous data is usually represented by TINs, rasters, or contour lines, so that any location has either a specified value or one that can be derived.

 Qualitative data

Data classified or shown by category, rather than by amount or rank, such as soil by type or animals by species.

 Quantitative

Data grouped or shown by measurements of number or amount, such as population per unit area.

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