CREATE

The CREATE module generates arriving entities to a model and may also specify initial attributes and variable assignments to be made at the time the entity is created. Entities may arrive in batches or individually.
Prompt Valid Entry Default
Batch Size Expression truncated to integer 1
First Arrival Expression (0.0)
Time Between Expression (distributions) Create only one batch
Max Batches Expression truncated to integer (infinite)
Mark Attribute Symbol name [ attributes] Creation time not saved
Assignment Type Attribute, variable or other Attribute
Attribute Symbol name [ attributes] Required
Variable Symbol name [ attributes] Required
Row Expression -
Column Expression -
Other Assignable variable Required
Value Expression Required
(Picture assignment) Picture, Picture set, non Picture
Initial Picture Symbol name (pictures) Default
Picture Set Symbol name [picture sets] Required
Set Index Expression truncated to integer Required

Examples :
Prompt Value
First Arrival 5.0
Time between 20

The first arrival will occur after 5.0 time units and will continue there-after every 20 time units. All other parameters assume default values (e.g. the batch size is one and no picture is defined for animation).
Prompt Value
Batch Size 5
Time Between EXP(4)
Max Batches 200
Mark Attribute Time_in

The first arrival will occur at time 0 and will consist of 5 entities. Thereafter new batches of 5 will be created with an exponential time distribution with a mean of 4. After 200 batches have been created no more will be generated. For each entity the attribute Time_in will be given the value TNOW, the current simulation time.