On Thursday 15 July 2004 03:01, Antonio Prioglio wrote: > Hi list, > As I understand statements within with() are local to what is > enclosed within its expression. > > As some excellent examples given to me previously have illustrated it > is nevertheless possible to assign the evaluation of an expression to > an external variable like x <- with(data, if(..)) > > During a "normalisation" phase of data read from a database I have a > long list of statements of the type > participant$longfieldname[is.na(participant$longfieldname)]<-expr(... >) or similar that makes cumbersome reading. (participant is a table of > demographic data) > > If there a neat way to do something of the sort > "participant<-with(participant,{...})"
You may want to take a look at ?transform Deepayan ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html