### DSTATS

The DSTATS element is used to obtain time persistent statistics in a discrete system. Statistics can be obtained on any ARENA user variable, system variable or expression containing these. It cannot be used directly with entity attributes.

Prompt | Description | Default
Number | DSTAT number [integer] | Sequential
ARENA expression | Expression on which time persistent statistics are required | -
Name | DSTAT name and label for the ARENA summary report | ARENA expression
Output file | Output file to which the DSTATS observations are written during the simulation run | No save
Report ID | Report identifier to which the DSTATS summary statistics are written at the end of the replication. | No reporting

Examples

Prompt | Value
ARENA expression | NQ(Wait_drill)
Name | Drill Queue size
Output file | “DRILLQ.DAT”

Summary statistics are to be collected on the number of entities in the drill queue and the item will be labeled ‘Drill queue size’ in the summary report. Individual readings will be saved in the disk file “DRILLQ.DAT”