substitute
On Fri, 16 May 2003, Wladimir Eremeev wrote:
I have troubles with 'substitute'. I have the data frame with vectors data$area.0, data$area.20, etc... Command substitute(data$area.lon,list(lon=20)) returns data$area.lon but is expected to return data$area.20 Where did I do mistakes?
The symbol is area.lon, not lon. substitute only work on whole symbols, and `.' is just part of the alphabet allowed in syntactic names.
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595