[R] find closest value in a vector based on another vector values

[arun]

Hi,
Perhaps this works:

a[sapply(b,function(x) which.min(abs(x-a)))]
#[1]  8 32

A.K.

----- Original Message -----
From: Andras Farkas <motyocska at yahoo.com>
To: r-help at r-project.org
Cc: 
Sent: Tuesday, June 18, 2013 8:34 AM
Subject: [R] find closest value in a vector based on another vector values

Dear All,

would you please provide your thoughts on the following:
let us say I have:

a <-c(1,5,8,15,32,69)
b <-c(8.5,33)

and I would like to extract from "a" the two values that are closest to the values in "b", where the length of this vectors may change but b will allways be shorter than "a". So at the end based on this example I should have the result "f" as

f <-c(8,32)

appreciate the help,

Andras

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