sub2allind

convert subscripts to ALL corresponding indices
ダウンロード: 653
更新 2012/2/7

ライセンスの表示

idx = sub2allind(sz, sub1, sub2, sub3, ... )

Like Matlab's sub2ind, sub2allind computes the equivalent linear indices for
given subscripts of an array with size SZ.
Unlike sub2ind, it computes a field of all combinations of
subscripts. So, instead of calling A( 2:3, 1, 4:11) you might
use
linIdx = sub2allind( size(A), 2:3, 1, 4:11 );

and then call A(linIdx) or A(linIdx(:)) or you reshape linIdx the way you need.

This is usefull whenever you want to access a subset of an array and compare it with a differently shaped thing, like

A(linIdx(:)) = A(linIdx(:)) + <1D-Vector>

Using the naked colon operator is allowed to reference an entire dimension:

linIdx = sub2allind( sz, :, sub2 );

引用

Michael Völker (2024). sub2allind (https://www.mathworks.com/matlabcentral/fileexchange/30096-sub2allind), MATLAB Central File Exchange. 取得済み .

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バージョン 公開済み リリース ノート
1.5.0.0

Added H1 line; fixed bug when asking for a column of indices only

1.4.0.0

* shape of output fits the adressed field now
* little more docu and error checking

1.1.0.0

* Implemented colon operator (Thanks to Matt J)
* possible errors catched; more comments

1.0.0.0