Hi R-users, I have a collection of dataframes and know how to build a string that refers to it, in this example, name_infra_alg_inc. Then, I have a character string yval, which the user can select from a drop down list. It contains the column names of the dataframes.
assign(paste(name_infra_alg_inc, "ci", sep="."), ci(get(name_infra_alg_inc)[[yval]], confidence=0.95)) My problem is that I sometimes want to combine columns. For example, if there are columns A, B and C. Would it be possible that yval has the value "A+B*C" and then call some sort of evaluate function? Maybe I could attach the dataframe and then call some function, I don't know how to figure this out, so hopefully someone can help me. Thanks in advance ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
