Creating Base Network
Associated tool names in italics
- Start with the pristine, fully NCS11-compliant full base network
- Import a zone system if one is not in place. Use a scenario known to work fine. (Copy Zone System)
- (might not be required) Connect centroids (CCGEN).
- Create a node extra attribute (default value = 1) to allow for removal of transit stops later on (Create extra attribute)
- (might not be required) Create a link extra attribute (default value = 0) called @z407. (Create extra attribute)
- (might not be required) Assign values to @z407. Can be loaded in from a text file. (Import attribute values)
- (in development) Make an aggregation selection file so that headway generation can be performed using naïve or average aggregation. (Create Aggregation Selection File)
- Split the full base into time period bases. (Create Time Period Network)
- AM = 0600-0900
- MD = 0900-1500
- PM = 1500-1900
- EV = 1900-2400
- ON = 0000-0600
- Assign values to us1 for all transit segments. Filter: line=______ xor line=TS____ xor line=GT____ (Prorate transit speeds)
- Clean the time period networks using the parameters listed (Remove Extra Nodes). Apply @stop as the stop filter.
- vdf: force
- length: sum
- type: first
- lanes: force
- ul1: avg
- ul2: force
- ul3: force
- dwt: sum
- dwfac: force
- ttf: force
- us1: avg_by_length
- us2: avg
- us3: avg
- @stn1: force
- @stn2: force
- In order to send an edited network back to the network caretaker, first make sure to remove the zone system. Use Delete Nodes with subset i = 0,9000
- Then use Export Network Package to prepare the network for sending.