datatable-help

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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 (5374)
Replies Last Post Views
setkey() docs out of date by mhwaliji
2
by mhwaliji
behavior of unique on data.tables with strings by Steven C. Bagley
6
by Steven C. Bagley
data.table crashes R session by Christoph_Jae
4
by Christoph_Jae
data.table packaged code throws error by AdamMarczak
1
by Matthew Dowle
data.table crashes my R session by Christoph_Jae
0
by Christoph_Jae
Random segfaults by caneff
33
by Matthew Dowle
IDateTime and plotting thereof by Farrel Buchinsky
5
by Steven C. Bagley
Error on := causes data.table to be left in a bad state by caneff
2
by caneff
calling unique on data table with a key by Steven C. Bagley
1
by Matthew Dowle
Losing timezone of POSIX datetimes by Karl Ove Hufthammer
2
by Karl Ove Hufthammer
1.7.6 submitted to CRAN by Matthew Dowle
0
by Matthew Dowle
CJ behavior in 1.7.5 by Damian Betebenner-2
2
by Damian Betebenner-2
Problem with CJ by Steven C. Bagley
1
by Matthew Dowle
Creating factors by Damian Betebenner-2
1
by Matthew Dowle
First passage time by devans1
0
by devans1
Another CJ anomaly by Damian Betebenner-2
0
by Damian Betebenner-2
v1.7.5 submitted to CRAN by Matthew Dowle
0
by Matthew Dowle
Behavior of CJ by Damian Betebenner-2
3
by Matthew Dowle
CJ is borked? by caneff
0
by caneff
Bigger table , smaller access time-how is this possible? by Ashim Kapoor
4
by Ashim Kapoor
What does the L stand for by Farrel Buchinsky
1
by Timothée Carayol
v1.7.4 submitted to CRAN by Matthew Dowle
0
by Matthew Dowle
crash bug in 1.7.3 on R pre-2.14.0 by Matthew Dowle
0
by Matthew Dowle
A new package int64 to support 64-bit integer in R by Branson Owen
3
by Branson Owen
v1.7.3 submitted to CRAN by Matthew Dowle
0
by Matthew Dowle
function for dataset record repeated by lunarossa
0
by lunarossa
1: In Ops.factor(left, right) : <= not meaningful for factors by set
0
by set
A special character in a string borks data.table by caneff
3
by Matthew Dowle
Why does cbind drop key? by caneff
4
by Matthew Dowle
key<- messes with my factors by caneff
1
by Matthew Dowle
Override the data.frame print function by caneff
11
by Branson Owen
Unintuitive behavior with by= by mhwaliji
1
by Matthew Dowle
Copy on assign broken in some cases by mhwaliji
8
by Matthew Dowle
v1.7.2 now on CRAN by Matthew Dowle
0
by Matthew Dowle
No error on invalid assignment by macrakis
3
by Matthew Dowle
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