uniques {Transition} | R Documentation |
Unique Values for Subject, Timepoint and Result
Description
uniques()
identifies unique values for subjects, timepoints and test results in
longitudinal study data.
Usage
uniques(
object,
subject = "subject",
timepoint = "timepoint",
result = "result"
)
Arguments
object |
a |
subject |
|
timepoint |
|
result |
|
Details
See Transitions
details.
Works for subject
as either an integer vector
or
a factor
.
Value
A list
of three elements
1. |
An |
2. |
|
3. |
An |
See Also
data.frame
, Dates
, ordered factor
.
Other transitions:
PreviousDate
,
PreviousResult
,
Transitions
Examples
## Continuing example from `add_transitions()`
# subject, timepoint and result arguments all defaults and required types
# (native subject is factor)
uniques(Blackmore)
#
Blackmore <- transform(Blackmore, subject = as.integer(subject))
# subject now as integer
Blackmore |> str()
uniques(Blackmore)
rm(Blackmore)