Re: [Boost-users] multi_array: creating a view to a single element

--- Sohail Somani wrote:

...

-----Original Message----- On Behalf Of Baranowski, Daniel [snip] Basically, I have a 2 Dimensional array and I would like to be able to access the center of that array using a variable that maps to some index (for example, element[3][3] in a 7x7 array). [snip]

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

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

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 Cromwell D. Enage __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com