Lesson 3

38問 • 11ヶ月前

ユーザ名非公開

通報

問題一覧

Stores spatial objects

Database

top level unit of geographic data

Geodatabase

collection of feature classes that share common coordinate

Feature Dataset

collection of features with same type of geometry

Feature Class

created both automatically and manually for any data entered into each feature class

Metadata

store non spatial information

Object Class

table that stores relationship between two features into two features classes

Relationship Class

GDB MDB

File Geodatabase, Personal Geodatabase

between two lines is important in analyzing routes through networks

intersects

relationship between a point and an area is important in relating objects to their surrounding environment

is contained in

types of spatial relationship

used to construct complex objects from simple primitives, cannot be computed from coordinates, computed from the coordinates of the objects

inside/overlapping

Containment

“touching” and “connectivity”

Adjacency

Adjacency and Containment

Topological Relationship

distance < 100”

Metric Relationship

Above, below, north_of, etc

Direction Relationship

Point-point

is within, is nearest to

Point-line

ends at, is nearest to

Point-Area

is contained in, can be seen from

Line-line

crosses, comes within, flows into

Line-area

crosses, borders

Area-area

overlaps, is nearest to, is adjacent to

defines unchangeable spatial relationships

Topology

mathematical method used to define spatial relationships between points, lines, and polygons

Topology

What properties change when map is distorted?

distances, angles, relative proximities

What would not change?

topological properties

Describes the relative positions of map features

Adjacency, Connectivity, Containment, Coincidence

GIS uses

Analysis, Data Integrity

from-node indicating where the arc begins and a to-node indicating where it ends

Arc-node Topology

arc is defined by two endpoints

Arc-node Topology

defines contiguity

Region Topology

the arc-node structure represents polygons as an ordered list of arcs rather than a closed loop of x,y coordinates

Polygon-arc Topology

- define paths based on series of arcs

Route Topology

Line features can share segments with other line features

Route

Area features can share boundaries

Polygon

Line features can share endpoints

Arc-node

Area features can be coincident with other area features

Region

Line features can share endpoint vertices with other point features

Node

Lecture 1 Part 1

Lecture 1 Part 1

Lecture 1 Part 2

Lecture 1 Part 2

Lecture 1 Part 3

Lecture 1 Part 3

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Lecture 7 (Stream Velocities)

GEOE (Lecture 1-3)

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Midterms

Midterms

Lesson 6

Lesson 6

Lesson 7A

Lesson 7A

Lesson 7B

Lesson 7B

Lesson 7C

Lesson 7C

Lecture 2

Lecture 2

Lecture 1

Lecture 1

Lecture 2

Lecture 2

Lesson 1

ユーザ名非公開 · 28問 · 11ヶ月前

Lesson 1

28問 • 11ヶ月前

ユーザ名非公開

History

ユーザ名非公開 · 10問 · 11ヶ月前

History

Lesson 2

Lesson 2

問題一覧

Stores spatial objects

Database

top level unit of geographic data

Geodatabase

collection of feature classes that share common coordinate

Feature Dataset

collection of features with same type of geometry

Feature Class

created both automatically and manually for any data entered into each feature class

Metadata

store non spatial information

Object Class

table that stores relationship between two features into two features classes

Relationship Class

GDB MDB

File Geodatabase, Personal Geodatabase

between two lines is important in analyzing routes through networks

intersects

relationship between a point and an area is important in relating objects to their surrounding environment

is contained in

types of spatial relationship

used to construct complex objects from simple primitives, cannot be computed from coordinates, computed from the coordinates of the objects

inside/overlapping

Containment

“touching” and “connectivity”

Adjacency

Adjacency and Containment

Topological Relationship

distance < 100”

Metric Relationship

Above, below, north_of, etc

Direction Relationship

Point-point

is within, is nearest to

Point-line

ends at, is nearest to

Point-Area

is contained in, can be seen from

Line-line

crosses, comes within, flows into

Line-area

crosses, borders

Area-area

overlaps, is nearest to, is adjacent to

defines unchangeable spatial relationships

Topology

mathematical method used to define spatial relationships between points, lines, and polygons

Topology

What properties change when map is distorted?

distances, angles, relative proximities

What would not change?

topological properties

Describes the relative positions of map features

Adjacency, Connectivity, Containment, Coincidence

GIS uses

Analysis, Data Integrity

from-node indicating where the arc begins and a to-node indicating where it ends

Arc-node Topology

arc is defined by two endpoints

Arc-node Topology

defines contiguity

Region Topology

the arc-node structure represents polygons as an ordered list of arcs rather than a closed loop of x,y coordinates

Polygon-arc Topology

- define paths based on series of arcs

Route Topology

Line features can share segments with other line features

Route

Area features can share boundaries

Polygon

Line features can share endpoints

Arc-node

Area features can be coincident with other area features

Region

Line features can share endpoint vertices with other point features

Node