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.
1 ... 3637383940
Topics (1373)
Replies Last Post Views
Data table syntax by Damian Betebenner-2
12
by Matthew Dowle
Programmatic by clauses by Johann Hibschman-4
6
by Matthew Dowle
Report an unexpected behavior in data.table 1.5 by Branson Owen
6
by Matthew Dowle
Efficient conversion of data table column to vector by Nicolas Chapados
5
by Matthew Dowle
Unexpected behavior with mult="all" by Harish-3
9
by Harish-3
Automagic timezone convertion on data.table rbind by Nicolas Chapados
3
by Matthew Dowle
Windows R-Forge build appears 18 days stale by Matthew Dowle
1
by Matthew Dowle
How to Adaptively Set Up the Coordinate Range of Multiple Graphs in One Figure by Wonsang You
1
by Matthew Dowle
Auto-convert characters to factors when settings keys? by Steve Lianoglou-6
27
by Steve Lianoglou-6
Environment of eval() execution for "j" appears to vary inexplicably by Harish-3
9
by Matthew Dowle
Testing 123 by Matthew Dowle
0
by Matthew Dowle
DT[NA] now returns 1 row of NA by Matthew Dowle
0
by Matthew Dowle
Gmane mirror by Matthew Dowle
0
by Matthew Dowle
Return Select/Join that does NOT match? by Branson Owen
7
by Matthew Dowle
Error when using eval() in j by Harish-3
1
by Matthew Dowle
Wonder whether there is an easier way to change part of data.table values by Branson Owen
7
by Short, Tom-2
Dataset "election.2008" by Ruser007
1
by David Freedman
Nabble mirror by Matthew Dowle
1
by Matthew Dowle
Unexpectedly getting "Didn't allocate enough rows..." by Harish-3
4
by Matthew Dowle
Ran into infinite loop when setting key/sorting columns with NA by Branson Owen
3
by Branson Owen
data.table indexing approaches by Short, Tom-2
1
by Matthew Dowle
Fixed large slow down introduced in v1.5 by Matthew Dowle
0
by Matthew Dowle
Can crash R with a data.table query by Harish-3
15
by Harish-3
data.table in functions by Sasha Goodman
4
by Matthew Dowle
Top N Items [was: Environment of eval() execution for "j" appears to vary inexplicably] by Harish-3
3
by Short, Tom-2
Expressions in "by" criteria (again) by Mike Sandfort
6
by Harish-3
Unable to find difference between two IDates by Harish-3
4
by Harish-3
Merging where key is large by Damian Betebenner-2
8
by Damian Betebenner-2
data.table - sort key - columns with real numbers by Desmond Wee
3
by Harish-3
Large speedup using .Internal with data.table by Matthew Dowle
1
by Matthew Dowle
Unable to have expression for "by" criteria by Harish-3
7
by Matthew Dowle
Not getting behavior described in FAQ by Harish-3
2
by Matthew Dowle
convenience function for transforming variables, and adding them to the table by Sasha Goodman
2
by Matthew Dowle
data.table question: ave like behavior by Ozan Bakış
2
by Ozan Bakış
Access to local variables in "j" expressions by Johann Hibschman-3
7
by Short, Tom-2
1 ... 3637383940