Displaying 3 results from an estimated 3 matches for "agregg".
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2008 Jun 06
1
Agreggating data using external aggregation rules
Dear R experts,
I am currently facing a tricky problem which I have read a lot about in
the various R mailing lists without finding exactly what I need.
I have a big data frame DF (about 2,000,000 rows) with 7 columns being
variables and 1 being a measure (using reshape package nomeclature).
There are no "duplicates" in it.
Fot each of the variables I have some "rules" to
2006 Aug 27
0
IndiaonRails
Announcing the launch of IndiaonRails,community for Rails developers in
India .
To begin with,we currently have the mailing list and the group website is
coming soon.
The website will have agreggated blogs,job board,company and developers
profile from India.
To subscribe to the mailing list,send a blank email to
list-subscribe-674WkhyW6MN/rK1k3pvHBuG/Ez6ZCGd0@public.gmane.org
Thanks
Dibya Prakash
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2008 Jun 06
6
Subsetting to unique values
I want to take the first row of each unique ID value from a data frame.
For instance
> ddTable <-
data.frame(Id=c(1,1,2,2),name=c("Paul","Joe","Bob","Larry"))
I want a dataset that is
Id Name
1 Paul
2 Bob
> unique(ddTable)
Will give me all 4 rows, and
> unique(ddTable$Id)
Will give me c(1,2), but not accompanied by the name column.