Dear list members, I am facing some problems using the aggregate() function. I want to calculate a sum and a mean of one variable over the combination of 12 factors with the aggregate() function to avoid loops but it doesn't work (or the job is far too long, it exceeds 2 hours). It works with a fewer number of factors, so I constructed a factor being the levels combination of 7 factors (I need the other ones being on their own). I had then 6 factors, but it still doesn't work. Could someone tell me how to fix the problem or know another function I could use ? Thank you very much, Joachim Claudet.
<?)))>< <?)))>< <?)))>< <?)))>< <?)))>< <?)))>< <?)))>< <?)))>< Joachim Claudet PhD EPHE - CNRS FRE 2935 52, avenue Paul Alduy 66860 Perpignan cedex Tel : 33 4 68662055 Fax : 33 4 68503686 <?)))>< <?)))>< <?)))>< <?)))>< <?)))>< <?)))>< <?)))>< <?)))><