Convert select upper case column names to lower case

Previous data set requirements included lower case names for data items like AMT and EVID. Lower case is no longer required.

lctran(data)

Arguments

data

an nmtran-like data frame

Value

A data.frame with renamed columns The input data set, with select columns made lower case.

Details

Columns that will be renamed with lower case versions: AMT, II, SS, CMT, ADDL, RATE, EVID, TIME. If a lower case version of these names exist in the data set, the column will not be renamed.

Examples

data <- data.frame(TIME = 0, AMT = 5, II = 24, addl = 2)
lctran(data)
#>   time amt ii addl
#> 1    0   5 24    2