On Aug 27, 2014, at 11:19 AM, Gang Chen wrote:
> A random effect formulation for R package nlme is read in as a string
> of characters from an input file:
>
> ranEff <- "pdCompSymm(~1+Age)"
>
> I need to convert 'ranEff' to a formula class. However, as shown below:
>
>> as.formula(ranEff)
> ~1 + Age
>
> the "pdCompSymm" is lost in the conversion. Any solutions?
as.formula(paste("~",ranEff))
~pdCompSymm(~1 + Age)
--
David Winsemius
Alameda, CA, USA
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