Quantcast

datatable-help

This forum is an archive for the mailing list datatable-help@lists.r-forge.r-project.org (more options) Messages posted here will be sent to this mailing list.
Questions and discussion about the data.table package in R. The package extends data.frame to provide keys, fast grouping, fast extract and fast joins in a short and flexible syntax.
data.table's homepage is here.
1234 ... 21
Topics (725)
Replies Last Post Views
Subsetting a data table and add a new column in one step by Frank S.
0
by Frank S.
seq with data.table by marcos.takahashi
1
by ahardjasa
Setting the key of a table produced by merging reorders original table if key column was used as by column by ahardjasa
0
by ahardjasa
Construct a new data table from another by Frank S.
4
by Frank S.
Subsetting By Row Function by bgoldstein
5
by natus
I have been agnozing over how to do a running cummulative sum over a particular date range by Farrel Buchinsky
6
by Mike.Gahan
I have been agnozing over how to do a running cummulative sum over a particular date range by Farrel Buchinsky
0
by Farrel Buchinsky
useR2014 by Matthew Dowle
2
by Matthew Dowle
data.table vs matrix speed by Steve Bellan-2
2
by Matthew Dowle
Join inherited scope with by by juancentro
0
by juancentro
Strange Error: bump from type 0 to type 1 by moflaherty
1
by fabio.marroni
When USA takes to give news about the fiancee visa? by whatmore
0
by whatmore
internal FALSE/TRUE value has been modified by juancentro
1
by Matthew Dowle
Speeding up column references with roll by macrakis
9
by Arunkumar Srinivasan
1.9.3 docs WAS Speeding up column references with roll by macrakis
0
by macrakis
i = !x different from i = (!x) by macrakis
1
by Arunkumar Srinivasan
Error corrupts tables by macrakis
1
by Arunkumar Srinivasan
Efficiently checking value of other row in data.table by ronin78
4
by ronin78
Finding Rdatatable/datatable by Gabor Grothendieck
1
by Arunkumar Srinivasan
by row by Gabor Grothendieck
1
by Arunkumar Srinivasan
`with=F` in the `i` Argument by Michael Smith
9
by Arunkumar Srinivasan
Self-Join: Potential Bug? by Michael Smith
2
by Michael Smith
Bug when Merging with nomatch=0 and roll=T? by Michael Smith
7
by Arunkumar Srinivasan
What is going on with R 3.1 ? by Michele
12
by mathematical.coffee
Finance Homework Help by janifar105
0
by janifar105
data.table is asking for help by Ron Hylton
10
by Michael Smith
subsetting by second key by gsee
4
by Arunkumar Srinivasan
Are you aware of this? by jeremiah rounds-2
1
by Arunkumar Srinivasan
We don't know why Stack Overflow data.table tag has just been renamed by Matthew Dowle
4
by Arunkumar Srinivasan
Slides for useR! data.table tutorial by Matthew Dowle
2
by Matthew Dowle
data.table syntax Data Warehouse use case simulation by Jan Gorecki
1
by Jan Gorecki
Re: datatable-help Digest, Vol 52, Issue 7 by Mikkel Grum-3
0
by Mikkel Grum-3
data.table error: invalid subscript type, except it isn't. by Mikkel Grum-3
2
by Steve Lianoglou-2
Dissertation Writing Service by janifar91
0
by janifar91
data.table has moved to GitHub by Matthew Dowle
3
by juancentro
1234 ... 21