-----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Cromwell Enage

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Would T & center = element[3][3] be satisfactory?

Try:

typename boost::multi_array<T,2>::index index1 = (element.index_bases()[0] + element.strides()[0]) / 2; typename boost::multi_array<T,2>::index index2 = element.index_bases()[1]; + element.strides()[1]) / 2; T& center = element[index1][index2];

To make it general, yes.

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I don't think multiarray supports any type of reallocation after construction, so it should be ok.

boost::multi_array has a resize() function, if that's what you're afraid of. See <http://www.boost.org/libs/multi_array/doc/reference.html>

In this case, obviously center would not be center anymore, so the OP should beware.