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- Intersection Magic Windows
- Data
- How can I get a list of all intersections in every virtual corridor?
Issue
A feature exists in the Pd’ Editor application (pdeditor.exe) that provides the ability to produce a list of every intersection within a virtual corridor as well as all of its aliases. This is a low-level routine intended for use by other programmers desiring to extract part of the data stored by IMW.
Explanation
Solution
The data file produced contains the following columns:
- CorridorId
- The unique identifier for this corridor. This value is also the unique identifier used in the Access database that IMW maintains its virtual locations in.
- IntCount
- The number of intersections in this corridor. This value does not include aliases. (i.e. there may be 3 intersections “IntCount” and several aliases for each intersection)
- CurInt
- The index of the intersection represented on this line. This relates directly to IntCount, and thus will repeat if aliases exist fot this intersection.
- CorName
- A human readable name for this corridor. (simply primary cross1 to cross2). This name name is not stored anywhere. It is calculated for this routine only.
- PrimaryStreet
- The primary street that was used to define this corridor. (will stay the same within any corridor)
- CurStreet
- The current cross street that was used to define this location. This value will repeat with each intersection alias.
- AliasCount
- The number of intersections that represent the current intersection.
- CurAlias
- The index of the alias represented on this line. This value directly relates to AliasCount.
- IntID
- The unique ID for this intersection. This is an internal number used by IMW. It is calculated using the primary and cross street indices. If a new database is created and streets are added to it again, this number will change.
- Root
- A boolean value indicating whether this line represents the root intersection in IMW. This value will be true for one and only one line per intersection alias.
- AsDefined
- A boolean value indicating whether this line represents the intersection as defined in the corridor list. This value will be true for one and only one line per intersection alias.
- Street1
- One of the two streets refered to by this intersection.
- Street2
- One of the two streets refered to by this intersection.
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