[R] how to merge within range?

[David Winsemius]

On May 14, 2011, at 8:12 AM, René Mayer wrote:

> Hello,
> how can one merge

And what happened when you typed:

?merge

> two data frames when in the second data frame one column defines the  
> start values
> and another defines the end value of the to be merged range.
> data.frame.1
> time ...
> 13
> 24
> 35
> 46
> 55
> ...
> data.frame.2
> start end
> 24 37 ?h? ?
> ...
>
> should result in this
> 13 NA
> 24 ?h?
> 35 ?h?
> 46 NA
> 55
> ?

And _why_ would that be?


> thanks,
> René
>
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David Winsemius, MD
West Hartford, CT