use 'findInterval' > x X1 X2 X3 X4 X5 X6 X8 X13 X14 X17 X40 2 4 6 7 9 11 13 14 15 16 17 > findInterval(4.25, x) [1] 2 > names(x)[2] [1] "X2" >
On Wed, Jun 17, 2009 at 10:19 PM, Germán Bonilla <germa...@gmail.com> wrote: > Hi all, > > I've got object *cumsumtab, *where the first row > (1,2,3,4,5,6,8,13,14,17,40) > are names (actually, categories), and the second row has numeric values. > > > cumsumtab > 1 2 3 4 5 6 8 13 14 17 40 > 2 4 6 7 9 11 13 14 15 16 17 > > I'm trying to find a way of finding to which category ( in > *names(cumsumtab) > * ) belongs a given value (let's say Q1 <- 4.25). So far, I've tried the > following: > > > Q1 <- 4.25 > > >cstQ1 <- cumsumtab-Q1 > >cstQ1 > 1 2 3 4 5 6 8 13 14 > 17 40 > -2.25 -0.25 1.75 2.75 4.75 6.75 8.75 9.75 10.75 11.75 12.75 > > > min(cstQ1[cstQ1>0]) > [1] 1.75 > > Then I'm trying to recover the name of the class that 1.75 (the closest > superior number) belongs to. I haven't found a function that actually tells > you the position that the value occupy on the list (so I can slice it or > something). > > ANY idea would be of great help. Thanks in advance. > > Germán Bonilla > I.Ecol, UNAM > > [[alternative HTML version deleted]] > > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
