mets (version 1.2.3.1)

dtransform: Transform that allows condition

Description

Defines new variables under condition for data frame

Usage

dtransform(data, ...)

Arguments

data

is data frame

...

new variable definitions including possible if condition

Examples

# NOT RUN {
data(mena)

xx <- dtransform(mena,ll=log(agemena)+twinnum)

xx <- dtransform(mena,ll=log(agemena)+twinnum,agemena<15)
xx <- dtransform(xx  ,ll=100+agemena,ll2=1000,agemena>15)
dsummary(xx,ll+ll2~I(agemena>15))
# }