[R] Issue with formula conversion
dwinsemius at comcast.net
Wed Aug 27 21:49:21 CEST 2014
On Aug 27, 2014, at 12:44 PM, Gang Chen wrote:
> Thanks for the help! However, I just need to get
> pdCompSymm(~1 + Age)
That's not a formula in the R sense of the word. You should do a better job of posting a use case. Perhaps you want an expression?
> without a tilde (~) at the beginning.
> On Wed, Aug 27, 2014 at 3:34 PM, David Winsemius <dwinsemius at comcast.net> wrote:
>> 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:
>>> ~1 + Age
>>> the "pdCompSymm" is lost in the conversion. Any solutions?
>> ~pdCompSymm(~1 + Age)
>> David Winsemius
>> Alameda, CA, USA
Alameda, CA, USA
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