Issue with formula conversion
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