VISSIM 5.30-05 User Manual

12 Dynamic Assignment
Matrix file format (*.FMA)
Below follows the description of the format of OD matrix files (*.FMA).
► All lines starting with an asterisk (*) are treated as a comment and are
not mentioned here.
► Time interval (hh.mm) for which the matrix is valid.
Examples:
1.3 reads as 1 hour 3 minutes (and not as 1 hour 30 minutes)
1.30 reads as 1 hour 30 minutes
1.50 reads as 1 hour 50 minutes (and not as 1 hour 30 minutes)
(This format was chosen for reasons of compatibility to other systems.)
The time information in the matrix is the absolute time of day. Therefore in
the VISSIM Simulation Parameters the start time needs to match the start
time used in the desired matrix.
► Scaling factor. This factor can be used to scale the matrix globally
► Number of zones
► Zone numbers of all zones that are used in the matrix
► Flow data. The data is interpreted as total number of vehicles per time interval
defined in the header (not necessarily the number of vehicles per
hour).
The first line contains all trips from the first zone to all other zones in the
order given with the definition of the zone numbers. The next line
contains all the trips from the second zone to all others and so on.
Example of an OD matrix
Example reading: From zone 20 to zone 30, 190 trips are defined for the
period of 1½ hours (from 0:00 to 1:30).
* time interval [hh.mm]
0.00 1.30
* scaling factor
1.0
* number of zones:
8
* zones:
10 20 30 40 50 60 70 80
* number of trips between zones
0 180 200 170 60 120 150 200
170 0 190 140 110 160 120 180
190 250 0 90 130 170 130 100
200 200 180 0 140 110 110 150
150 100 120 130 0 30 190 160
20 180 260 100 10 0 140 170
140 190 120 100 180 130 0 120
190 170 90 140 150 160 110 0
616 VISSIM 5.30-05 © PTV AG 2011