Declare 3d array with blitz++

Question

How can I declare a 3d array(like arrays nested in arrays which are in turn nested in arrays) with blitz++? Say the dimensions are 3,4,5. Also how would I access said array elements? Could you also tell me how to get the size of each dimension of this multi dimensional array? like for c++ vectors there are oneDvec.size(), twoDvec.size() or twoDvec[di].size() etc.

General Reference: http://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list — Armen Tsirunyan, Apr 08 '13 at 20:06

score 1 · Accepted Answer · answered Apr 08 '13 at 20:16

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// declare
blitz::Array<double, 3> blitzArray( 3, 4, 5 );
// access
blitzArray(0,0,0) = 1.0001;

answered Apr 08 '13 at 20:16

Öö Tiib

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Thank you Oo. Could you also tell me how to get the size of each dimension of this multi dimensional array? like for c++ vectors there are oneDvec.size(), twoDvec.size() or twoDvec[di].size() etc. – amy Apr 09 '13 at 09:58
Could it be blitzArray.extent(0), blitzArray.extent(1) and blitzArray.extent(2) for 1D, 2D and 3D array size respectively? – amy Apr 09 '13 at 10:12

score 1 · Answer 2 · answered Apr 10 '13 at 07:18

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Yes, it is blitzArray.extent(0), blitzArray.extent(1) and blitzArray.extent(2) for 1D, 2D and 3D array size respectively.

answered Apr 10 '13 at 07:18

amy

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Declare 3d array with blitz++

2 Answers2