test.data.table() runs successfully on my otherwise faulty version: All 300 tests in test.data.table() completed ok in 2.420sec
I then proceeded to download the tar from CRAN and install it with R CMD INSTALL, and my problems are fixed -- I think I had the same issues as Chris Neff in another thread! Thanks a lot Timothee On Thu, Aug 4, 2011 at 5:20 PM, Matthew Dowle <[email protected]> wrote: > >> As a digression, is there a better way to drop a number of columns? > > Yes : > > A[,a:=NULL] > > but only one column at a time, currently. That should be 0.000 time, > regardless of the size of the table. > > On the errors, have you installed 1.6.3 from R-Forge before, by any chance? > If so, I think you may be having 'update' issues, too. > Does test.data.table() work and how many tests does it run? > > > "Timothée Carayol" <[email protected]> wrote in message > news:cagam+c4wed3c1mn2rxqxs8tmql1r60wkm44u4rhuy6pi0oq...@mail.gmail.com... > Also, > > A$a <- NULL > A > > at best shows an error: >> A$a <- NULL >> A > Error in data.table(lapply(x, function(x) { : > 'translateCharUTF8' must be called on a CHARSXP > > and at worst crashes my R process (segfault). > > I guess I'll just do "as.data.table(within(as.data.frame(A)" for now ;-) > > t > > > 2011/8/4 Timothée Carayol <[email protected]>: >> I am used to removing columns using >> A <- within(A, rm(column)) >> >> However this stopped working: >> >>> A <- data.table(a=1:10, b=11:20) >>> within(A, rm(a)) >> Error in within.data.table(A, rm(a)) : >> Can only assign one column at a time currently via within >> In addition: Warning message: >> In rm(a) : object 'a' not found >> >> transform(A, a=NULL) doesn't work either. >> >> As a digression, is there a better way to drop a number of columns? >> A[, -col] doesn't work; A[, -"col", with=F] either. >> >> I have the latest version from CRAN I believe. >> >> Thanks >> Timothee >> > > > > > _______________________________________________ > 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
