Hi R users, I am trying to use the aggregate function with a survey design object and survey functions, but get the following error. I think I am incorrectly using the syntax somehow, and it may not be possible to access variables directly by name in a survey-design object. Am I right? How do I fix this problem? I have used aggregate with "mean" and "weighted.mean", and that works fine. I am trying to find out where the difference is. What would be an efficient alternative to aggregate for a large dataset?
> s <- aggregate(income,list(age,sex),function(x) (svymean(~x,design=d.na))) Error in aggregate(income, list(age, sex), function(x) (svymean(~x, : Object "income" not found [[alternative HTML version deleted]] ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help