Hi, This is now fixed in SVN, revision 644: https://r-forge.r-project.org/scm/viewvc.php?view=rev&root=datatable&revision=644
Thanks for the report, Mani! -steve On Sat, Sep 22, 2012 at 4:40 AM, Matthew Dowle <[email protected]> wrote: > > Welcome. > > That's FR#1797 (Allow j to be logical when with=FALSE) : > https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1797&group_id=240&atid=978 > > In the meantime can wrap with which(). > >> Hi all, >> I am just starting to use data.table and finding it very convenient for >> handling large datasets. >> >> I am used to logical indexing of columns for wide data.frames, and >> wondering why the same cannot be achieved with data.table even after >> specifying with=FALSE. >> >> Here is a toy example. >> --- >> a = data.frame(x=1:3,y=4:6,z=7:9) >> logidx = c(TRUE,TRUE,FALSE) >> a[,logidx] >> # x y >> # 1 1 4 >> # 2 2 5 >> # 3 3 6 >> a = data.table(a) >> a[,c(1,2),with=FALSE] #works >> a[,-3,with=FALSE] #works >> a[,which(logidx),with=FALSE] #works >> a[,logidx,with=FALSE] #doesn't work >> # Error in `[.data.table`(a, , logidx, with = FALSE) : j out of bounds >> --- >> >> I'm trying to understand why the last command doesn't work? I'm using >> data.table 1.8.2 and R 2.15.0. Any help is appreciated. >> >> Thanks, >> Mani >> >> PS: Apologies if you receive multiple copies, as I was having trouble >> subscribing to the email list. >> _______________________________________________ >> datatable-help mailing list >> [email protected] >> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help >> > > > _______________________________________________ > datatable-help mailing list > [email protected] > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help -- Steve Lianoglou Graduate Student: Computational Systems Biology | Memorial Sloan-Kettering Cancer Center | Weill Medical College of Cornell University Contact Info: http://cbio.mskcc.org/~lianos/contact _______________________________________________ datatable-help mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
