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<DIV><FONT face=Arial size=2>Hello-</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> While I was reading a tutorial
book for R (actually, for S-Plus:Brian S. Everitt. A Handbook of Statistical
Analysis using S-PLUS. Chapman & Hall, London, 1994) I tried to execute this
simple exercise:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> <FONT
face="Courier New">> x <- -c(1,2,3,4,5,6)</FONT></FONT></DIV>
<DIV><FONT face="Courier New" size=2> > X <-
-c(10,11,12,100,-5,-6)</FONT></DIV>
<DIV><FONT face="Courier New" size=2> >x+X</FONT></DIV>
<DIV><FONT face="Courier New" size=2> [1] -11, -13, -15, -104,
0, 0</FONT></DIV>
<DIV><FONT face="Courier New" size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> As you can see, the added
vectors resulted in negative numbers ! (the answer should have been: <FONT
face="Courier New">[1] 11, 13, 15, 104, 0, 0</FONT><FONT
face=Arial>)</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2> Mind you, this is R 1.2.1 for
Windows, under WIndows ME, 64 Mb RAM, pIII 800 MHz. The same thing happens,
however, with the recently distributed "R 1.2.2 patched".</FONT></DIV>
<DIV><FONT face=Arial size=2> Clues, anyone?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> Thank you.</FONT></DIV>
<DIV><FONT face=Arial size=2> Best regards,</FONT></DIV>
<DIV><FONT face="Courier New" size=2> <FONT
face=Arial> </FONT></FONT></DIV>
<DIV><FONT face=Arial size=2> Henry</FONT></DIV>
<DIV><FONT face=Arial size=2> <A
href="mailto:hzi@uol.com.br">hzi@uol.com.br</A></FONT></DIV></BODY></HTML>