lab 9

Question 1

Point, line, and polygon proximity buffers

Answer 1

Often used to delineate zones around features or to show areas of influence

Question 2

Point Buffer made by

Answer 2

Create a 2-mile buffers around polluting companies.Use point centroids with blocks and block groups to determine populations within the buffers.

Question 3

Point buffer examples

Answer 3

Population and poverty statistics near polluting companies
Walkability near schools
Campus lighting study

Question 4

Line Buffer examples

Answer 4

Access to daycare, work, and education study
Bus route and business opportunities

Question 5

Polygon Buffer example

Answer 5

Youth population near parks

Question 6

MULTIRING BUFFER EXAMPLES

Answer 6

Obesity study
Pedestrian accidents near small parklets and playgrounds

Question 7

NETWORK EXAMPLES

Answer 7

Street networks

Question 8

Transportation network database element (edges)

Answer 8

the street and other segments over which we travel

Question 9

Transportation network database element (turns)

Answer 9

features that describe connections between edges

Question 10

Transportation network database element (junctions )

Answer 10

points at which different kinds of networks connect(e.g., metro stations, bus stations, railroad stations)

Question 11

NETWORK DATASETS COMMERCIAL VENDORS

Answer 11

Esri StreetMap North America
2005 Tele Atlas

Question 12

Data clustering

Answer 12

Branch of data mining, then finds clusters of data points that are close to each other but distant from points of other clusters
exploratory method, no right or wrong clusters