<div dir="ltr">Thank you Jeff Zemla<div>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.</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature">Farrel Buchinsky<br>Google Voice Tel: (412) 567-7870<br></div></div>
<br><div class="gmail_quote">On Tue, Jan 27, 2015 at 10:06 AM, Jeff Zemla <span dir="ltr"><<a href="mailto:jeffzemla@gmail.com" target="_blank">jeffzemla@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">R 3.1.0<div>data table 1.9.5</div><div><br></div><div>can't replicate. did you try reinstalling data table?</div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Tue, Jan 27, 2015 at 9:15 AM, Farrel Buchinsky <span dir="ltr"><<a href="mailto:fjbuch@gmail.com" target="_blank">fjbuch@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr">Look what happens when I execute the example. Any idea why I am getting the error.<div><br></div><div><div>> DT <- data.table(A = rep(1:3, each=4), B = rep(1:4, each=3), C = rep(1:2, 6), key = "A,B")</div><div>> duplicated(DT)</div><div> [1] FALSE TRUE TRUE FALSE FALSE TRUE FALSE TRUE FALSE FALSE TRUE TRUE</div><div>> unique(DT)</div><div>Error in .Call("Cwhichwrapper", x, bool) : </div><div> "Cwhichwrapper" not resolved from current namespace (data.table)</div><div><br></div><div>Here is my session info</div><div><br></div><div>Running from within RStudio Version 0.99.179</div><div><br></div><div><div>R version 3.1.2 (2014-10-31)</div><div>Platform: x86_64-w64-mingw32/x64 (64-bit)</div><div><br></div><div>locale:</div><div>[1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 </div><div>[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C </div><div>[5] LC_TIME=English_United States.1252 </div><div><br></div><div>attached base packages:</div><div>[1] stats graphics grDevices utils datasets methods base </div><div><br></div><div>other attached packages:</div><div> [1] knitr_1.9 zoo_1.7-11 RGoogleDocs_0.7-0 reshape2_1.4.1 </div><div> [5] ggplot2_1.0.0 stringi_0.4-1 stringr_0.6.2 car_2.0-22 </div><div> [9] plyr_1.8.1 data.table_1.9.5 lubridate_1.3.3 RODBC_1.3-10 </div><div><br></div><div>loaded via a namespace (and not attached):</div><div> [1] bitops_1.0-6 chron_2.3-45 colorspace_1.2-4 digest_0.6.8 </div><div> [5] evaluate_0.5.5 formatR_1.0 grid_3.1.2 gtable_0.1.2 </div><div> [9] lattice_0.20-29 MASS_7.3-35 memoise_0.2.1 munsell_0.4.2 </div><div>[13] nnet_7.3-8 proto_0.3-10 Rcpp_0.11.4 RCurl_1.95-4.5 </div><div>[17] scales_0.2.4 tools_3.1.2 XML_3.98-1.1 </div></div><div><br></div><div><br></div><div><div>Thanks a lot. Farrel</div><div><br></div><div><br></div><div>Farrel J. Buchinsky MBChB, BSc(HONS)MED, FACS</div></div><div><a href="tel:%28412%29%20567-7870" value="+14125677870" target="_blank">(412) 567-7870</a> [mobile, work, home]</div><div>Director, Pediatric Otolaryngology: Allegheny General Hospital</div><div>Director, Respiratory Papillomatosis Program: Allegheny-Singer Research Institute</div><div>320 E. North Ave.</div><div>Pittsburgh, PA 15212 </div>
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