[R] Problem mit summaryBy: Group sums gives me "incorrectly" zero for one variable
pensterfuzzer at yahoo.de
Mon Aug 20 18:13:03 CEST 2007
first I want to thank all of you for the quick aid
which is provided here on the list during all times.
Thanks a lot for that!
Then, I have a problem using summaryBy which most
probably is a problem of wrong use by me or the like:
I use this command:
summaryBy(total+total.inf~gr, aE, FUN=sum)
where aE is a
'data.frame': 127880 obs. of 16 variables:
$ gr : num 2.02e+10 1.13e+10 2.15e+10
4.02e+10 1.04e+10 ...
$ total : num 187714 5214 5214 260714
$ total.inflated: num 188806 5245 5245 262230
Now, the resulting sum for total.inf per gr is
perfectly fine but for the sum for total per gr I get
only zeroes although they shouldn't be zero.
Has anybody experienced a similar problem? What am I
Thank you very much for your help,
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