Evaluating pedestrian areas with area measurements
You can define or generate area measurements that record data of pedestrian areas with sections. You can display and store result attributes in evaluations and lists. To allow an area measurement to record data, the following conditions must be satisfied:
- At least one section must be defined in the network (Modeling sections). If sections are placed on top of pedestrian areas, they can record pedestrian area data.
- At least one area measurement must be defined or generated and assigned to at least one section (Defining an area measurement in lists), (Generating area measurements in lists).
- At least one pedestrian input and one pedestrian route must be defined in the pedestrian area (Modeling pedestrian inputs), (Modeling pedestrian routing decisions, pedestrian routes and partial pedestrian routes).
On a ramp, you can collect data from an area measurement with a section. To do so, in the Additional Level ( AddLvl ) attribute of the section, you must select the level leading to the ramp (Attributes of sections).
By default, the data for all pedestrian classes is entered together. You can also show the data for certain pedestrian classes separately in the evaluation (Configuring evaluations of the result attributes for lists).
Saving results of area measurements
Output data and formats
You can save the following data and data formats:
| Output | ASCII file | MDB table |
Attribute file from attribute list Area measurements |
|---|---|---|---|
|
Aggregated data |
- |
- |
|
|
Raw data |
*.merP |
- |
- |
- Show result attributes in attribute lists (Displaying result attributes in attribute lists)
- Show result attributes in a result list (Showing result attributes in result lists)
- Save result attributes to files (Using the Direct output function to save evaluation results to files)
- Show result attributes of area measurements in list (Showing results of measurements)
Attributes of aggregated data output
You can display result attributes in the Area Measurement Results list.
Maximum, minimum, average all refer to time interval values.
|
Result attribute Long name |
Short name |
Description |
|---|---|---|
|
Number of pedestrians (maximum), (minimum), (average) |
NumPedsMax, NumPedsMin, NumPedsAvg |
maximum, minimum number of vehicles in sections, average number in sections |
|
Number of stops |
NumStops |
Number of stops during the evaluation interval. A pedestrian counts as standing still if his speed is less than 0.2 m/s. |
|
Leave time maximum), (minimum), (average) |
tLeavMax, tLeavMin, tLeavAvg | first, last, and average point in time all pedestrians leave the sections [simulation second] |
|
Orientation x |
OrientXAvg |
Average of the x component of the orientation vectors |
|
Orientation y |
OrientYAvg |
Average of the y component of the orientation vectors |
|
Walk-out count |
WalkOutCnt |
Number of pedestrians who have left sections This does not include passengers boarding PT vehicles. |
|
Density (maximum), (minimum), (average) |
DensMax, DensMin, DensAvg |
Pedestrian density in sections |
| Density experienced (maximum), (minimum), (average) | DensityExp | Pedestrian density experienced within the perception radius of a pedestrian. The count of pedestrians within the personal surrounding radius of a pedestrian excludes the pedestrian itself. Calculated based on the pedestrian movements within the current time step. Therefore, it does not have a value in the first time step. Does not take into account pedestrians in the time step who are deleted at the end of this time step. |
| Entry time (maximum), (minimum), (average) | tEntMax, tEntMin, tEntAvg | first, last, and average point in time all pedestrians reach the sections [simulation second] |
| Walk-in count | WalkInCnt | Number of pedestrians walking in the sections. Pedestrians from inputs and pedestrians alighting from PT vehicles are not counted. |
| Area measurements | AreaMeasurement | Name and number of area measurement |
|
Total distance (maximum), (minimum), (average) |
TotDistMax, TotDistMin,TotDistAvg |
maximum, minimum and average total distance traveled in sections of all pedestrians who have left the sections during the aggregation interval |
|
Total time gain (average) |
TotTmGainAvg |
average total time gain in sections for pedestrians who have left the sections during the aggregation interval |
|
Total delay (maximum), (minimum), (average) |
TotDelayMax, TotDelayMin, TotDelayAvg |
maximum, minimum and average total time delay in sections for pedestrians who have left the sections during the aggregation interval The total time delay refers to the sum of different time delays, for example waiting time at signal controller or obstruction due to other pedestrians. |
|
Total dwell time (maximum), (minimum), (average) |
TotDwlTmMax, TotDwlTmMin, TotDwlTmAvg |
maximum, minimum and average total dwell time in sections of all pedestrians who have left the sections during the aggregation interval The total dwell time refers to the sum of different dwell times, for example waiting time at signal controller or travel time. |
|
Speed (maximum), (minimum), (average) |
SpeedMax, SpeedMin, SpeedAvg |
maximum, minimum and average speed |
|
Speed x-component (maximum), (minimum), (average) |
SpeedXMax, SpeedXMin, SpeedXAvg |
maximum, minimum, and average speed of x-component of speed vector |
|
Speed y-component (maximum), (minimum), (average) |
SpeedYMax, SpeedYMin, SpeedYAvg |
maximum, minimum, and average speed of y-component of speed vector |
|
Speed deviation (average) |
SpeedDevAvg |
average deviation of pedestrian speeds |
|
Speed variance |
SpeedVar |
Vectorial speed differences of all pedestrians within the personal environment radius of their own speed (Selecting network settings for pedestrian behavior) |
|
Nearest neighbor distance (maximum), (minimum), (average) |
NearNeighbDistMax, NearNeighbDistMin, NearNeighbDistAvg |
Maximum, minimum and average distance to the center of the pedestrian to which the distance is lowest. |
|
Source quantity |
SourceQu |
Number of pedestrians walking in the sections. This also includes pedestrians from inputs and pedestrians alighting from PT vehicles. |
|
Stop delay (total) |
StopDelay Tot |
Total standstill time of pedestrians during the evaluation interval. A pedestrian counts as standing still if his speed is less than 0.2 m/s |
|
Desired speed (average) |
DesSpeedAvg |
average desired speed of all pedestrians |
|
World coordinate x (maximum), (minimum), (average) |
WorldXMax, WorldXMin WorldXAvg, |
maximum, minimum and average world coordinate x |
|
World coordinate y (maximum), (minimum), (average) |
WorldYMax, WorldYMin, WorldYAvg |
maximum, minimum and average world coordinate y |
|
World coordinate z (maximum), (minimum), (average) |
WorldZMax, WorldZMin, WorldZAvg |
maximum, minimum and average world coordinate z |
| Time interval | TimeInt |
Duration of the evaluation intervals in which the data is aggregated |
| Destination count | DestCnt |
Number of pedestrians that will not be leaving the sections, e.g. because their route ends in one of them or they are alighting a PT vehicle. |
Output file of pedestrian area result
Structure of the output file *.merP:
|
Element |
Description |
|---|---|
| Measurement area (raw data) |
File title |
|
File |
Path and name of network file |
|
Comment |
Optional comment from the simulation parameters |
|
Date |
Time of evaluation |
|
PTV Vissim |
Version number, service pack number, build number |
| List | List of evaluated areas |
|
Column names |
Column headers and units |
|
Data block |
Data block with measurement data |
|
Column |
Meaning |
|---|---|
|
MeasurementAreaNo |
Number of section |
|
tEnter |
Time pedestrian entered the section [simulation second] |
|
tLeave |
Time pedestrian left the section [simulation second] |
|
PedNo |
Pedestrian number |
|
PedType |
Pedestrian type |
|
DwellTime |
Dwell time [s] pedestrians spent in section |
|
vDes |
Desired speed in the currently selected unit for the speed: average, minimum and maximum |
|
v |
Speed in the currently selected unit for the speed: average, minimum and maximum |
|
DevSpeed |
Deviation of pedestrian speed in the currently selected unit for the speed |
|
Density |
Pedestrian density in the sections [ped/m²] or [ped/ft²], depending on the unit set for short distances |
|
AvgXOri |
Average of x values of orientation vector |
|
AvgYOri |
Average of y values of orientation vector |
|
WorldX WorldY WorldZ |
World coordinate X World coordinate Y World coordinate Z |
| TimeGain |
Time gain [s]: Total time gain is determined based on the delay time. The total time gain is determined only if the pedestrian is faster than desired. |
|
TimeDelay |
Time delay [s]: Total time delay is determined from the "time lost" per time step. This is determined from the difference between actual speed and desired speed if the pedestrian is slower than desired. Delays through using a detour are not taken into account in the delay. |
|
Dist |
Distance traveled so far in the sections, in the current unit set for short distances |
|
DistNetwork |
Total distance traveled so far in the network in currently selected unit for short distances |
Example of raw data *.merP
The data blocks below the file header contain the area results and all column identifiers.
Area Measurement (raw data)
File: C:\Dokumente und Einstellungen\All Users\Dokumente\PTV Vision\PTV Vissim 2024\Examples Demo\KAmerP2013.inpxComment:
Date: 03.01.2024 12:23:33PTV Vissim 2024.00-00* [253691]
Section No. : Section number
tEnter : Time at which the pedestrian entered the section
[Simulation second]
tLeave : Time at which the pedestrian left the section
[Simulation second]
PedNo : Pedestrian number
PedType : Pedestrian type
Dwell time : total time [s] that the pedestrian
spent within the sections
vDes : Desired speed [km/h]
vX : X component of the speed vector [km/h]
vY : Y component of the speed vector [km/h]
v : Speed [km/h]
DevSpeed : Deviation of pedestrian speed [km/h]
Density : Pedestrian density in section [ped/m²]
AvgXOri : Average of x values of orientation vector
AvgYOri : Average of y values of orientation vector
WorldX : World coordinate x
WorldY : World coordinate y
WorldZ : World coordinate z
TimeDelay : Time delay [s]
TimeGain : Time gain [s]
Distance : Distance [m] the pedestrian
covered within the sections
DistNetwork : Distance [m] pedestrian traveled in networt so far
MeasurementAreaNo; tEnter; tLeave; PedNo; PedType; Dwell time;
2; 9.0; 28.8; 19; 100; 19.8;
vDes; vDes; vDes; vX; vX; vX; vY;
Average; Min; Max; Average; Min; Max; Average;
5.1; 5.1; 5.1; 4.8; 0.0; 5.0; -1.2;
vY; vY; v; v; v; DevSpeed; Density;
Min; Max; Average; Min; Max; ;Average;
-1.3; -0.0; 4.9; 0.0; 5.1; 0.15; 0.00;
Density; Density; AvgXOri; AvgYOri; WorldX; WorldX; WorldX;
Min; Max; Average; Min; Max;
0.00; 0.00; 0.9703; -0.2413; -1178.1; 0.9703; -0.2413;
WorldY; WorldY; WorldY; WorldZ; WorldZ; WorldZ;Time delay;
Average; Min; Max;Average; Min; Max; ;
115.3; 111.9; 118.6; 0.0; 0.0; 0.0; 0.6;
TimeGain; TravDist; DistNetwork;
0.0; 27.5; 27.5;
