Dear R-News, I sent a query to r-help asking why t.test did not exist on my installation of R. Thanks to Douglas Bates, Michael Camann, Kjetil Halvorsen, Ko-Kang Kevin Wang, Peter Dalgaard, and Jonathan Baron who pointed out that t.test is in the package, ctest, which should be installed automatically. I did some checking as to why I had the problem. First, ctest was not on the search path when I start up R; library(ctest) gave me access to ctest, thereby solving the problem at a practical level, but it did not explain why I had the problem. I found that I had defined a .First function in the Rprofile file in rw1031\etc. Apparently this function masked or otherwise disabled the .First function in rw1031\library\base\R\Rprofile; the latter .First function loads ctest, so my .First function in rw1031\etc\Rprofile prevented the loading of ctest. Once I removed the .First function from rw1031\etc\Rprofile, t.test was accessible as were other objects in ctest. Thanks, John -------------------------------------------------------------------- John Miyamoto | Department of Psychology, Box 351525 | If ignorance is bliss, University of Washington | why are so many people Seattle, WA 98195-1525. | unhappy? Phone: 206-543-0805, Fax: 206-685-3157 | Email: jmiyamot at u.washington.edu | -------------------------------------------------------------------- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._