hist(X[Y>=A & Y<=B]) `An Introduction to R' explains such things, as do (in more detail) the introductory texts (see the R FAQ).
On Wed, 27 Aug 2003, Eugene Salinas wrote: > I'm a recent R convert so I haven't quite figured out > the details yet... > > 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? > > In STATA I would give something like: > > histogram X if ((Y>=A & Y<=B)) > > (The data is for individuals and each individual has a > number of characteristics including X and Y). -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
