Quiz K
What is a 'street centerline' file?
A file containing line segments representing roads
Describe the TIGER/Line files
A file produced by the U.S. Census Bureau that contains (among other items) the line segments that correspond with roads all over the United States
How does 'linear interpolation' affect the geocoding process?
A method used in geocoding to place an address location among a range of addresses along a segment
What is a geospatial network?
A series of junction and edges connected together for modeling concepts such as streets
Define 'Sources' and 'Sinks' in a Utility Network.
A source is a junction from which a commodity flows. A sink is a junction where all commodity flow terminates.
What is an 'edge' in a network?
A term used for the links of a network
What is a 'junction' in a network?
A term used for the nodes (or places where edges come together) in a network
What is 'address parsing' in the geocoding process?
Breaking an address up into its components parts
List three examples of 'address elements'.
House number, the street name and the postal code
What is a Logical Network?
It is a collection of connected edges and junctions. It does not have coordinate values. Its main purpose is to store the connectivity information of a network along with certain attributes.
What is a Geometric Network?
It is a collection of features that comprise a connected system of edges and junctions.
What is the advantage of Complex Junction Features?
It is associated with a collection of junctions and edges in a logical network. The edges and junctions are connected and may be arranged in any topological configuration.
What is the advantage of Complex Edge Features?
It is associated with any number of edges in a logical network. These edges must be arranged in a chain configuration.
What is an 'address locator'?
It is the combination of location-specific reference data and certain style-specific guidelines based on the address locator style selected.
How do you determine an address locator style?
It is the skeleton of the address locator. In general terms, the address data needs to contain the desired elements used in matching an address to a feature and be in an acceptable format.
What are the two types of data required for the geocoding process?
Reference data and address data are required for the geocoding process.
What is 'address standardization' in the geocoding process?
Setting up the components of an address in a regular format
What is meant by 'connectivity' in a network?
The linkages between edges and junctions of a network
What is 'Geocoding'?
The process of using the text of an address to plot a point at that location on a map
Networks can be divided into what two broad categories?
The two broad categories are transportation and utility.
What are the two fundamental components of a network?
They are edges and junctions. Some examples of edges are streets and pipes. Some examples of junctions are street intersections and fuses.
Define 'Weights' in a network.
They are typically used to store the cost of traversing across an edge or through a junction.
Describe the Edge-Junction Connectivity Rule.
This rule constrains which type of junctions can connect to a type of edges.
Describe the Edge-Junction Cardinality Rule.
This rule lets you restrict the count of the edges that connect at a junction.
How does an address differ from coordinates when describing a location?
Unlike a coordinate value, an address describes how to reference a location based on existing features in your GIS database
What happens when an address is 'parsed'?
When an address locator standardizes an address, it dissects the address into its address elements based on the style of the address locator.
