[R] Easy way?
maechler at stat.math.ethz.ch
Mon Jun 26 10:14:56 CEST 2000
>>>>> "Uwe" == Uwe Ligges <ligges at statistik.uni-dortmund.de> writes:
>> Yves Gauvreau wrote:
>> Say I have this vector x <- sort(rnorm(n)). I'd like to know if
>> there is a nice way to find out the index of the nearest x to say
Uwe> I would try:
which(abs(x - 1.5) == min(abs(x - 1.5)))
(and Jan Schelling gives the same solution in "modular" steps
without recomputing "abs(x - 1.5)".)
This is fine and fast enough for moderate data size.
However, since version 1.1
>> See Also:
>> `Logic', `which.min' for the index of the minimum or maximum.
and which.min(), which.max() are really the functions you want to use
Martin Maechler <maechler at stat.math.ethz.ch> http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum LEO D10 Leonhardstr. 27
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1228 <><
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