Thank you Jeff Zemla That fixed it. I reinstalled data.table and it all worked. Wonder how that happened. I just installed R 3.1.2 and am almost certain that I reinstalled data.table yesterday after upgrading R.
Farrel Buchinsky Google Voice Tel: (412) 567-7870 On Tue, Jan 27, 2015 at 10:06 AM, Jeff Zemla <[email protected]> wrote: > R 3.1.0 > data table 1.9.5 > > can't replicate. did you try reinstalling data table? > > On Tue, Jan 27, 2015 at 9:15 AM, Farrel Buchinsky <[email protected]> > wrote: > >> Look what happens when I execute the example. Any idea why I am getting >> the error. >> >> > DT <- data.table(A = rep(1:3, each=4), B = rep(1:4, each=3), C = >> rep(1:2, 6), key = "A,B") >> > duplicated(DT) >> [1] FALSE TRUE TRUE FALSE FALSE TRUE FALSE TRUE FALSE FALSE TRUE >> TRUE >> > unique(DT) >> Error in .Call("Cwhichwrapper", x, bool) : >> "Cwhichwrapper" not resolved from current namespace (data.table) >> >> Here is my session info >> >> Running from within RStudio Version 0.99.179 >> >> R version 3.1.2 (2014-10-31) >> Platform: x86_64-w64-mingw32/x64 (64-bit) >> >> locale: >> [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United >> States.1252 >> [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C >> >> [5] LC_TIME=English_United States.1252 >> >> attached base packages: >> [1] stats graphics grDevices utils datasets methods base >> >> other attached packages: >> [1] knitr_1.9 zoo_1.7-11 RGoogleDocs_0.7-0 reshape2_1.4.1 >> >> [5] ggplot2_1.0.0 stringi_0.4-1 stringr_0.6.2 car_2.0-22 >> >> [9] plyr_1.8.1 data.table_1.9.5 lubridate_1.3.3 RODBC_1.3-10 >> >> >> loaded via a namespace (and not attached): >> [1] bitops_1.0-6 chron_2.3-45 colorspace_1.2-4 digest_0.6.8 >> [5] evaluate_0.5.5 formatR_1.0 grid_3.1.2 gtable_0.1.2 >> [9] lattice_0.20-29 MASS_7.3-35 memoise_0.2.1 munsell_0.4.2 >> [13] nnet_7.3-8 proto_0.3-10 Rcpp_0.11.4 RCurl_1.95-4.5 >> [17] scales_0.2.4 tools_3.1.2 XML_3.98-1.1 >> >> >> Thanks a lot. Farrel >> >> >> Farrel J. Buchinsky MBChB, BSc(HONS)MED, FACS >> (412) 567-7870 [mobile, work, home] >> Director, Pediatric Otolaryngology: Allegheny General Hospital >> Director, Respiratory Papillomatosis Program: Allegheny-Singer Research >> Institute >> 320 E. North Ave. >> Pittsburgh, PA 15212 >> >> _______________________________________________ >> datatable-help mailing list >> [email protected] >> >> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help >> > >
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