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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.

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Topics (477)

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ggplot2 and GGally, NeatMap, PKgraph, Rcell, TradeStrategyAnalyzer, XLConnect, bams, bios2mds, cda, data.table, directlabels, ez, ezsim, ggcolpairs, nullabor, nvis, planar, ppstat, spef, spikeSlabGAM, tourr by Uwe Ligges-2

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by Uwe Ligges-3

BUG: droplevels mangles subsetted data.table by pchalasani

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by Matthew Dowle

New package bit64 over package int64 by Branson Owen

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by Branson Owen

Re: converting sql to data table with subqueriesand exists clauses by Matthew Dowle

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by Matthew Dowle

subsetting .SD by Matthew Finkbeiner

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by Matthew Finkbeiner

converting sql to data table with subqueries and exists clauses by DS-21

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by DS-21

Re: [R] [R-pkgs] new package 'bit64' - 1000x faster than 'int64' sponsored by Google by macrakis

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by macrakis

Re: Using list valued columns with by (Matthew Dowle) by Matthew Finkbeiner

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by Joseph Voelkel

Using list valued columns with by by caneff

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by Matthew Dowle

data table question sql equivalent in data table with subqueries by DS-21

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by Matthew Dowle

using J() to select for a value that is in something other than the first key by Farrel Buchinsky

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by Matthew Dowle

Assignement by reference on a datatable subset by cduprez

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by cduprez

Missing data completion by cduprez

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by cduprez

v1.7.10 submitted to CRAN by Matthew Dowle

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by Matthew Dowle

Gremlins since 1.7.8 by Damian Betebenner-2

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by Matthew Dowle

neighbor list. correlation by knut-o

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by knut-o

Merge bug in v 1.7.8 and 1.7.9? by DM-2

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by DM-2

1.7.9 submitted to CRAN by Matthew Dowle

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by Matthew Dowle

Selecting rows (rownames) and colnames of a matrix by ZoliTeglas

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by Steven C. Bagley

Selecting rows (rownames) and colnames of a matrix b by ZoliTeglas

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by ZoliTeglas

Selecting rows (rownames) and colnames of a matrix by ZoliTeglas

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by ZoliTeglas

RecordLinkage, randomNames and data.table 1.7.8 by Prof Brian Ripley

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by Andreas Borg-2

cartesian product by Sasha Goodman

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by Sasha Goodman

1.7.8 submitted to CRAN by Matthew Dowle

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by Matthew Dowle

pandas vs data.table by Matthew Dowle

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by Matthew Dowle

Syntax: ag["M",age]$age ? by Dieter Menne

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by Steve Lianoglou-6

problem with reading a .csv file with read.table by aaurouss

1

by Christoph_Jae

Way too many alloc.col warnings? by caneff

4

by Matthew Dowle

Invitation from Tal by Matthew Dowle

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by Christoph_Jae

colwise division by Serdar Akin

2

by Christoph_Jae

Conflict in the use of "J" between the packages. by jholtman

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by Matthew Dowle

"Chris crash" - followup questions by DM-2

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by DM-2

data.table heisenbug - large DT by DM-2

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by Matthew Dowle

Cryptic error with $<- and := by Timothée Carayol

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by Matthew Dowle

SAS/R/data.table by Matthew Dowle

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by MICHELE DE MEO-2

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