As somebody else replied (but for some reason did not get through it) the
solution to this is to convert the variable TIME3 from POSIXlt to POSIXct.
It works like a charm.
Nevertheless, there is a bug in that R should give me a warning/error
message, and not simply crash. I reported the bug to the
Manta libero.it> writes:
>
> Dear R users,
>
> I may have found a bug in the function 'data.table'. I have a similar
> question as the one in this post:
>
> http://stackoverflow.com/questions/3367190/
aggregate-and-weighted-mean-in-r
>
[snip]
> While I run the command
>
> temp[,list(we
Dear R users,
I may have found a bug in the function 'data.table'. I have a similar
question as the one in this post:
http://stackoverflow.com/questions/3367190/aggregate-and-weighted-mean-in-r
I have a dataset with assets, quantity traded, date and time. I would like
to calculate the value weig
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