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campsis (version 1.7.0)

fillIOVOccColumns: Fill IOV/Occasion columns.

Description

Problem in RxODE (LOCF mode) / mrgsolve (LOCF mode), if 2 rows have the same time (often: OBS then DOSE), first row covariate value is taken! Workaround: identify these rows (group by ID and TIME) and apply a fill in the UP direction.

Usage

fillIOVOccColumns(table, columnNames, downDirectionFirst)

Value

2-dimensional dataset

Arguments

table

current table

columnNames

the column names to fill

downDirectionFirst

TRUE: first fill down then fill up (by ID & TIME). FALSE: First fill up (by ID & TIME), then fill down