On Wed, 27 Aug 2003, Eugene Salinas wrote: > I'm a recent R convert so I haven't quite figured out > the details yet...
Usually it is good to read the manuals when you use a unfamiliar software... > How do I select one variable by another one? Ie if I > want to draw the histogram of variable X only for > those individuals that also have a value Y in a > certain range? e.g. x = rnorm(100) y = 1:100 x[y = 20:50] will give you the value of x when y is between 20 and 50. To do a histogram, type: ?hist -- Cheers, Kevin ------------------------------------------------------------------------------ "On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question." -- Charles Babbage (1791-1871) ---- From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help