Statistical Data Collectors

Using a Counter

The Report

The model report now includes a section for Count objects where both of our new counters list their results.

CountExampleExperiment Report
Model CountExample

Description

This is a simple process-oriented model of the railway station inside a container terminal using bins to represent different storage areas. Container ships arrive at the terminal and deliver containers to the storage areas. From there they are loaded onto trains that leave for four different destinations: Northern, Central, and Eastern Europe
and Germany. Each destination is allocated a storage area (Bin). Trains only load containers from the storage area that is associated with their destination whereas ships deliver containers to all storage areas.

Two counters are added to record the number of trains leaving the terminal and the overall number of containers exchanged. Report drawn at 1500.0. Last reset at 0.0.

Counts

Title
(Re)set
Obs
Current Value
Min
Max
number of trains
0.0
3431
3431
0
3431
number of containers
0.0
3431
205685
0
205685

Bins

Title
Order
pass
(Re)set
Prod
Cons
Init
Max
Now
Averg.
avg.Wait
QLimit
QMaxL
refus.
Eastern Europe
FIFO
no
0.0
250
853
50
982
54
76.6829
1.24983
unlimit.
1
0
Northern Europe
FIFO
no
0.0
250
880
50
916
0
76.50206
1.19614
unlimit.
1
0
Central Europe
FIFO
no
0.0
250
822
50
603
69
66.30563
1.3146
unlimit.
1
0
Germany
FIFO
no
0.0
250
876
50
745
2
74.20416
1.20516
unlimit.
1
0

Distributions

Title
(Re)set
Obs
Type
Parameter 1
Parameter 2
Seed
Ships Arrival Stream
0.0
251
Negative Exponential
6.0
 
91080577
No of containers per destination
0.0
1000
Integer Uniform
25.0
400.0
71529105
Train Length Stream
0.0
3435
Integer Uniform
30.0
90.0
43946618

By the way: The four Bin objects show that our counter for the number of trains is working correctly. If you add the values listed under Cons (consumers) for the four bins, you get the 3,431 trains that have departed from the terminal during the simulation run.

You may download the full source code of this example if you want to try it out yourself.