[R] Find the closest value in a list or matrix

From: R_Learner <sschiang8_at_gmail.com>
Date: Wed, 09 Jul 2008 08:28:01 -0700 (PDT)

I have a long list of numbers [3.4,5.4,3.67,....], and I basically want to find the index of the number closest to this number that I have, let's say 5.43. How would I do this without writing a for loop (I have to do this many times for several lists)? Is there a "lookup" function in R?

Thanks!

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