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emili
2005 Aug 29
0
[LLVMdev] PyPy release 0.7.0 announcement
...http://codespeak.net/pypy/dist/pypy/doc/contributor.html
have fun,
the pypy team, of which here is a partial snapshot
of mainly involved persons:
Armin Rigo, Samuele Pedroni,
Holger Krekel, Christian Tismer,
Carl Friedrich Bolz, Michael Hudson,
Eric van Riet Paap, Richard Emslie,
Anders Chrigstroem, Anders Lehmann,
Ludovic Aubry, Adrien Di Mascio,
Niklaus Haldimann, Jacob Hallen,
Bea During, Laura Creighton,
and many contributors ...
PyPy development and activities happen as an open source project
and with the support of a consortium partially funded...
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.