On Jul 28, 2010, at 7:28 AM, Dimitris Rizopoulos wrote:
a couple of the many possible ways are:
x <- c(23,36,45,62,79,103,109)
thr <- 67
x[x > thr][1]
head(x[x > thr], 1)
Since he wanted the subscript rather than the number wouldn't it be:
which(x > 67)[1]
head( which(x > 67), 1)
--
David.
I hope it helps.
Best,
Dimitris
On 7/28/2010 12:12 PM, Raghu wrote:
Hi
I have a sorted array ( in ascending order) and I want to find the
subscript
of a number in the array which is the the next highest number to a
given
number. For example,if I have 67 as a given number and if I have a
vector
x=c(23,36,45,62,79,103,109), then how do I get the subscript 5 from
x (to
get 79 which is the next highest to 67) without using a for loop?
Thx
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
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