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AICP - FPK History > Spatial Analysis > Flashcards

Spatial Analysis Flashcards

1
Q

GIS

A

field of computerized mapping

Multiple applications.

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2
Q

Spatial Data

A

themes, layers, coverages. Can be displayed accurately due to georeferencing.

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3
Q

Attributes

A

Information about object or feature. Attributes of census data include tract number, population, avg HHI, number of HH, etc.

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4
Q

Topographic map

A

a two-dimensional representation of a portion of the three-dimensional surface of the earth

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5
Q

Global Positioning Systems (GPS)

A

Improved the spatial accuracy of planning information. GPS allows the incorporation of the location of features and facilities into databases. This is used frequently in a smartphone and associated apps to show your location or provide directions. It is also used by transportation departments to alert drivers to traffic delays.

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6
Q

TIGER

A

Topographically Integrated Geographical Encoding and Referencing Map.

Census data. TIGER maps includes streets, RR, zip codes and landmarks.

TIGER maps are used by the U.S. Census Bureau and can be downloaded into a GIS system, where they are often used as base layers upon which local information is added.

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7
Q

Digital Aerial Photography

A

Digital aerial photography has allowed for increased accuracy to the 0.5-foot resolution.

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8
Q

Digital Elevation Models (DEMs)

A

how digital data about the elevation of the earth’s surface as it varies across communities allows planners to analyze and map it. DEMs can be used for stormwater management, flood control, land use decisions, and other purposes.

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9
Q

Light Detection and Ranging (LIDAR)

A

is a new technology using a laser, instead of radio waves, that is mounted in an airplane to provide detailed topographic information. It can provide a dense pattern of data points to create one-foot contours for DEMs for use in watershed mapping and hydrologic modeling for flood control. It can also be used to sense the environment for code violations, such as signs that were not built to comply with code.

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10
Q

UrbanSim

A

is a simulation software program that models planning and urban development. This free software program is designed to be used by Metropolitan Planning Organizations (MPOs).

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11
Q

CommunityViz

A

Is an ESRI software environment that allows agencies to analyze land use scenarios and create 3D images. This allows citizens to visualize the potential for development and redevelopment.

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12
Q

Urban Footprint

A

as developed by Peter Calthorpe and Associates and is a more recent addition to the simulation program options for planners. It uses a library of place types, block types, and building types to support interactive scenario building.

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13
Q

What are the two important aspects of geographic information?

A

Locational information and attribute (values) information

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14
Q

What are the two dominant data types in GIS?

A

Raster - grids, pixels

Vector- points, lines, polygons, networks (layers)

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15
Q

What is a datum?

A

A mathematical approximation of the shape of the earths surface as an ellipsoid to compute location

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16
Q

What are the four characteristics of geographic information that are affected by projections, and what are the corresponding projections?

A

Shape, distance, direction, land area

Conformal (keeps shape)
Equal area
Equidistant
True Direction

17
Q

What is the purpose of map classification?

A

To group the observations into categories that correspond with a given color shade on the map

18
Q

What is the difference between a map showing equal interval vs. a quantile distribution?

A

Equal interval has the same value difference between categories but number of observations in each category can differ.

A quantile map has equal number of obs/data in each category but values difference between the categories varies.

19
Q

Which map classification method is like a histogram?

A

Equal interval, equal size categories

20
Q

Which planner is recognized as the pioneer of overlay analysis?

A

Ian McHarg in Design with Nature

21
Q

What is a heat map?

A

A map to show the intensity of events or concentration of points

AICP - FPK History (35 decks)

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