MAROUTER

generated on 2018-12-14 00:24:44.719779 from the wiki page for MAROUTER for SUMO git

From 30.000 feet

MAROUTER computes a macroscopic user assignment (routes) to be loaded into SUMO from various inputs (Origin-Destination-Matrices, trip files or route files).

Purpose: Macroscopic route assignment
System: portable (Linux/Windows is tested); runs on command line
Input (mandatory):
A) a road network as generated via NETCONVERT or NETGENERATE, see Building Networks
B) O/D matrix
Output: Definition of Vehicles, Vehicle Types, and Routes usable by SUMO
Programming Language: C++

Usage Description

MAROUTER computes a user assignment (routes) with a configurable assignment method (using option assignment-method):

  • incremental
  • UE: user equilibrium
  • SUE: stochastic user equilibrium

MAROUTER uses a hard-coded capacity-constraint function based on speed limit, lane number and edge priority to compute traveltimes and flows based on density. For details, see functions capacityConstraintFunction and getCapacity in <SUMO_HOME>/src/marouter/ROMAAssignments.cpp.

MAROUTER reads OD matrices and creates route files. These route files contain route distributions between traffic assignment zones. Each route in the distribution is a fully specified list of network edges.

Microscopic Outputs

One of the main usages of MAROUTER is to compute a Demand/Dynamic_User_Assignment. To this end it generates <flow> definitions with fully specified routes that can be loaded into SUMO and SUMO-GUI.

Macroscopic Outputs

MAROUTER can create macroscopic traffic data for all network edges by using the option --netload-output. This data contains travelTime, speed, entered (the number of vehicles that entered the edge) and flowCapacityRatio (the proportion of total capacity used). These values can either be written aggregated for the whole day (default) or split into intervals according to the time-granularity of the input data (--aggregation-interval).

To show this output in SUMO-GUI the following approach can be used:

 sumo-gui -n net.net.xml --weight-files netload.xml -e 86400 --weight-attribute <ATTR>

where <ATTR> is one of 'travelTime, speed, entered, flowCapacityRatio'. Then change the Street visualization settings to color by loaded weight

By advancing the simulation, different time values can be shown.

Note:
It is useful to configure a simulation delay or to set breakpoints, because the simulation will run very fast without vehicles. Also, an end time should be set as the simulation will prompt to abort when there no vehicles.

Options

You may use a XML schema definition file for setting up a MAROUTER configuration: marouterConfiguration.xsd.

Configuration

Option Description
-c <FILE>
--configuration-file <FILE>
Loads the named config on startup
-C <FILE>
--save-configuration <FILE>
Saves current configuration into FILE
--save-template <FILE> Saves a configuration template (empty) into FILE
--save-schema <FILE> Saves the configuration schema into FILE
--save-commented <BOOL> Adds comments to saved template, configuration, or schema; default: false

Input

Option Description
-n <FILE>
--net-file <FILE>
Use FILE as SUMO-network to route on
-d <FILE>
--additional-files <FILE>
Read additional network data (districts, bus stops) from FILE
-m <FILE>
--od-matrix-files <FILE>
Loads O/D-files from FILE(s)
--od-amitran-files <FILE> Loads O/D-matrix in Amitran format from FILE(s)
-r <FILE>
--route-files <FILE>
Read sumo-routes or trips from FILE(s)
-w <FILE>
--weight-files <FILE>
Read network weights from FILE(s)
--lane-weight-files <FILE> Read lane-based network weights from FILE(s)
-x <STRING>
--weight-attribute <STRING>
Name of the xml attribute which gives the edge weight; default: traveltime
--weight-adaption <FLOAT> The travel time influence of prior intervals; default: 0
--taz-param <STRING> Parameter key(s) defining source (and sink) taz

Output

Option Description
--write-license <BOOL> Include license info into every output file; default: false
--output-prefix <STRING> Prefix which is applied to all output files. The special string 'TIME' is replaced by the current time.
--precision <INT> Defines the number of digits after the comma for floating point output; default: 2
--precision.geo <INT> Defines the number of digits after the comma for lon,lat output; default: 6
-H <BOOL>
--human-readable-time <BOOL>
Write time values as hour:minute:second or day:hour:minute:second rathern than seconds; default: false
-o <FILE>
--output-file <FILE>
Write flow definitions with route distributions to FILE
--vtype-output <FILE> Write used vehicle types into separate FILE
--ignore-vehicle-type <BOOL> Does not save vtype information; default: false
--netload-output <FILE> Writes edge loads and final costs into FILE
--all-pairs-output <FILE> Writes complete distance matrix into FILE
--exit-times <BOOL> Write exit times (weights) for each edge; default: false

Processing

Option Description
--aggregation-interval <TIME> Defines the time interval when aggregating single vehicle input; Defaults to one hour; default: 3600
--max-alternatives <INT> Prune the number of alternatives to INT; default: 5
--weights.interpolate <BOOL> Interpolate edge weights at interval boundaries; default: false
--weights.expand <BOOL> Expand weights behind the simulation's end; default: false
--routing-algorithm <STRING> Select among routing algorithms ['dijkstra', 'astar', 'CH', 'CHWrapper']; default: dijkstra
--bulk-routing.vtypes <BOOL> Aggregate routing queries with the same origin for different vehicle types; default: false
--routing-threads <INT> The number of parallel execution threads used for routing; default: 0
--weight-period <TIME> Aggregation period for the given weight files; triggers rebuilding of Contraction Hierarchy; default: 3600
-s <FLOAT>
--scale <FLOAT>
Scales the loaded flows by FLOAT; default: 1
--vtype <STRING> Defines the name of the vehicle type to use
--prefix <STRING> Defines the prefix for vehicle flow names
--timeline <STRING> Uses STR as a timeline definition
--timeline.day-in-hours <BOOL> Uses STR as a 24h-timeline definition; default: false
--additive-traffic <BOOL> Keep traffic flows of all time slots in the net; default: false
--assignment-method <STRING> Choose a assignment method: incremental, UE or SUE; default: incremental
--tolerance <FLOAT> Use FLOAT as tolerance when checking for SUE stability; default: 0.001
--left-turn-penalty <FLOAT> Use left-turn penalty FLOAT to calculate link travel time when searching routes; default: 0
--paths <INT> Use INTEGER as the number of paths needed to be searched for each OD pair at each iteration; default: 1
--paths.penalty <FLOAT> Penalize existing routes with FLOAT to find secondary routes; default: 1
--upperbound <FLOAT> Use FLOAT as the upper bound to determine auxiliary link cost; default: 0.5
--lowerbound <FLOAT> Use FLOAT as the lower bound to determine auxiliary link cost; default: 0.15
-i <INT>
--max-iterations <INT>
maximal number of iterations for new route searching in incremental and stochastic user assignment; default: 20
--max-inner-iterations <INT> maximal number of inner iterations for user equilibrium calcuation in the stochastic user assignment; default: 1000
--route-choice-method <STRING> Choose a route choice method: gawron, logit, or lohse; default: logit
--gawron.beta <FLOAT> Use FLOAT as Gawron's beta; default: 0.3
--gawron.a <FLOAT> Use FLOAT as Gawron's a; default: 0.05
--keep-all-routes <BOOL> Save routes with near zero probability; default: false
--skip-new-routes <BOOL> Only reuse routes from input, do not calculate new ones; default: false
--logit.beta <FLOAT> Use FLOAT as (c-)logit's beta for the commonality factor; default: 0.15
--logit.gamma <FLOAT> Use FLOAT as (c-)logit's gamma for the commonality factor; default: 1
--logit.theta <FLOAT> Use FLOAT as (c-)logit's theta; default: 0.01

Defaults

Option Description
--flow-output.departlane <STRING> Assigns a default depart lane; default: free
--flow-output.departpos <STRING> Assigns a default depart position
--flow-output.departspeed <STRING> Assigns a default depart speed; default: max
--flow-output.arrivallane <STRING> Assigns a default arrival lane
--flow-output.arrivalpos <STRING> Assigns a default arrival position
--flow-output.arrivalspeed <STRING> Assigns a default arrival speed

Time

Option Description
-b <TIME>
--begin <TIME>
Defines the begin time; Previous trips will be discarded; default: 0
-e <TIME>
--end <TIME>
Defines the end time; Later trips will be discarded; Defaults to the maximum time that SUMO can represent; default: 9223372036854774

Report

Option Description
-v <BOOL>
--verbose <BOOL>
Switches to verbose output; default: false
--print-options <BOOL> Prints option values before processing; default: false
-? <BOOL>
--help <BOOL>
Prints this screen; default: false
-V <BOOL>
--version <BOOL>
Prints the current version; default: false
-X <STRING>
--xml-validation <STRING>
Set schema validation scheme of XML inputs ("never", "auto" or "always"); default: auto
--xml-validation.net <STRING> Set schema validation scheme of SUMO network inputs ("never", "auto" or "always"); default: never
-W <BOOL>
--no-warnings <BOOL>
Disables output of warnings; default: false
-l <FILE>
--log <FILE>
Writes all messages to FILE (implies verbose)
--message-log <FILE> Writes all non-error messages to FILE (implies verbose)
--error-log <FILE> Writes all warnings and errors to FILE
--ignore-errors <BOOL> Continue if a route could not be build; default: false

Random Number

Option Description
--random <BOOL> Initialises the random number generator with the current system time; default: false
--seed <INT> Initialises the random number generator with the given value; default: 23423


This page was last modified on 13 December 2018, at 08:21.