[R] [PS] vlookup in R

[Ben Fairbank]

Another way:

If x is a two column matrix, as suggested by Henrique D., 

   ID        Value
1   7  0.000656733
2   6  0.201764789
3   1  0.671113391
4  10 -0.739727826
5   9 -1.111310154
6   5 -0.859455833
7   2 -1.408229877
8   8  0.993126295
9   3 -0.171906808
10  4 -0.140107677

And you are looking up the value corresponding to "ID"

 ID <- 4

x[(1:dim(x)[1])[x[,1]==ID],2]

will also do it, and you can vary the value of the 2 in order to query
the column of interest, much as you can do with vlookup in the E
program.

Ben 

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Sachin J
Sent: Monday, March 24, 2008 9:25 AM
To: r-help at r-project.org
Subject: [PS] [R] vlookup in R

Hi,

Is there are function similar to excel vlookup in R. Please let me know.

Thanks,
Sachin