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Counting the number of elements with the values of x in a vector
...t; a <- table(numbers)
> a
numbers
4 5 23 34 43 54 56 65 67 324 435 453 456 567 657
2 1 2 2 1 1 2 1 2 1 3 1 1 1 1
Then you can subset it:
> a[names(a)==435]
435
3
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See Another answer (2015).
Original 2009 Answer:
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Undefined reference to `pow' and `floor'
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