On Thu, Jul 30, 2009 at 2:30 PM, Sundar Dorai-Raj<sdorai...@gmail.com> wrote: > On Thu, Jul 30, 2009 at 2:28 PM, Sundar Dorai-Raj<sdorai...@gmail.com> wrote: >> I just noticed the following in update.formula and I'm wondering if >> this behavior is the intention of the developers. Here's an example: >> >> update(`a: b` ~ x, ~ . + y) >> >> Note now that the response has no backticks and is interpreted as a:b >> (i.e. ":" is now an operator). This is because in update.formula the >> call to terms.formula uses simplify = TRUE. I'm working with data that >> has a lot of colons in their names and for reporting purposes I don't >> want to use make.names to avoid this situation. I do have a solution >> which simply avoids using update.formula, but I wonder if the >> developers would consider removing the "simplify" argument and allow >> it to be passed through "...", which is currently ignored by >> update.formula. Alternatively, add a simplify=TRUE to the >> update.formula call, which can manually be set to FALSE by the user. >> >> I would love to hear any comments or criticisms of my findings. >> >> Thanks, >> >> --sundar >> > > Forgot my version info > >> version > _ > platform x86_64-unknown-linux-gnu > arch x86_64 > os linux-gnu > system x86_64, linux-gnu > status > major 2 > minor 9.1 > year 2009 > month 06 > day 26 > svn rev 48839 > language R > version.string R version 2.9.1 (2009-06-26) >
This bounced on me so I don't know if it actually made it through. Sorry if this is a repost. --sundar ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
