precedence | R Documentation |
Check for precedence between two activities.
If activity_b
occured, it should be preceded by activity_a
in the same case, i.e., if B
was executed, it could not
have been executed before A
was executed. For example, the trace [A,C,B,B,A]
satisfies the precedence
relation.
precedence(activity_a, activity_b)
activity_a |
|
activity_b |
|
Other Ordering rules:
ends()
,
responded_existence()
,
response()
,
starts()
,
succession()
library(bupaR) library(eventdataR) # A MRI Scan should be preceeded by a Blood test. patients %>% check_rule(precedence("Blood test","MRI SCAN"))
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