I'm pretty sure you want to use
findInterval()
Why did you not find it?
In other words, what did you try to find it?
Regards,
Martin Maechler, ETH Zurich
>>>>> "halldor" == halldor bjornsson <[EMAIL PROTECTED]>
>>>>> on Tue, 8 Aug 2006 16:47:18 +0000 writes:
halldor> Hi , I have two sorted vectors X and Xi, where the
halldor> range of Xi lies within the range of X.
halldor> For an element in Xi, I want to find the
halldor> neigbouring data in X, e.g. find an index ix so
halldor> that for element number k, then X[ix[k]] < X[k] <
halldor> X[ix[k] +1] # also OK with "<=" on either one, but
halldor> not both
halldor> This is easy to code by looping over the data in
halldor> X,Xi, but I suspect there may be a faster and more
halldor> elegant way to do this in R.
halldor> In Python (Numeric) the same can be achieved with
halldor> ix=Numeric.searchsorted(X[1:-1],Xi), which is quite
halldor> compact.
halldor> So, does anyone know of a corresponding R call that
halldor> can achive the same?
halldor> Sincerely, Halld?r
halldor> -- Halldor Bjornsson Weatherservice R & D Icelandic
halldor> Met. Office
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