[R] find closest match between two vectors

Jannis bt_jannis at yahoo.de
Thu Dec 16 18:31:45 CET 2010

Dear list,

I hope I can define my problem in an understandable manner. I seek some 
funktion that finds me the index of the value in a vector 1 that is the 
least bigger then the value in another vector 2. And this for all values 
in vector 2.

For example:

vector 1 : c(1,2,6)

vector 2 : c(0,0.5,1,2,3,8)

the result should be as long as vector 2 and give the indices of the 
corresponding elements in vector 1:

result: c(1,1,2,3,3,NA)

Any suggestions how to do this without doing complicated loops through 
vector 2?


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