[R] Strange Expression
Hello, I have a dataframe with a column 'col' of expressions of the form 2*3+4*5+6*7 and substrings thereof. Now eval(2*3+4*5+6*7) is ok. But I want it done on that column... nothing seems to work Even cil - dataframe$col eval(cil[1]) 2*3+4*5+6*7 I want the elements of the column evaluated. Thanks, A. Mani Member, Cal. Math. Soc [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Strange Expression
On 3/3/2006 7:09 AM, A Mani wrote: Hello, I have a dataframe with a column 'col' of expressions of the form 2*3+4*5+6*7 and substrings thereof. Stored in what form? It sounds from below that they may be character vectors or factors. It would be easier to help if you gave a reproducible example. Duncan Murdoch Now eval(2*3+4*5+6*7) is ok. But I want it done on that column... nothing seems to work Even cil - dataframe$col eval(cil[1]) 2*3+4*5+6*7 I want the elements of the column evaluated. Thanks, A. Mani Member, Cal. Math. Soc [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Strange Expression
On 3/3/06, ¨Tariq Khan [EMAIL PROTECTED] wrote: Did you try eval(parse(text = cil[1])) ? yes, function (x) eval(parse(x)) works within the *apply commands. thanks, -- A. Mani Member, Cal. Math. Soc [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
