dtransform {mets}

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

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))