Thanks a lot. Its really helpful
Regards
Saba
On Saturday, 23 April 2016, 6:50, Giorgio Garziano
<giorgio.garzi...@ericsson.com> wrote:
Since the aggregate S3 method for class formula already has got na.action =
na.omit,
## S3 method for class 'formula'
aggregate(formula, data, FUN, ...,
subset, na.action = na.omit)
I think that to deal with NA's, it is enough:
aggregate(Value~ID, dta, max)
Moreover, passing na.rm = FALSE/TRUE is "don't care":
aggregate(Value~ID, dta, max, na.rm=FALSE) result is:
ID Value
1 1 0.69
2 2 0.99
3 3 1.00
4 4 1.00
5 5 0.50
which is the same of na.rm=TRUE.
On the contrary, in the following cases:
aggregate(Value~ID, dta, max, na.action = na.pass)
ID Value
1 1 0.69
2 2 0.99
3 3 1.00
4 4 NA
5 5 0.50
aggregate(Value~ID, dta, max, na.action = na.fail)
Error in na.fail.default(list(Value = c(0.69, 0.31, 0.01, 0.99, 1, NA
the result is different.
--
Best,
GG
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