[R] Replacing values job

[Richard.Cotton at hsl.gov.uk]

> I have two vectors of different lengths which contain the same set of
> values:
> 
> X < -c(2,6,1,7,4,3,5)
> Y <- c(1,1,6,4,6,1,4,1,2,3,6,6,1,2,4,4,5,4,1,7,6,6,4,4,7,1,2)
> 
> How can I replace the values in Y with the index (!) of the 
corresponding
> values in X. So 2 appears in X in the first coordinate, so all 2â??s in 
Y
> should be replaced by 1, etc.

Really easy this one:
X[Y]

Regards,
Richie.

Mathematical Sciences Unit
HSL


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