1 scilab comment // Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
2 scilab comment // Copyright (C) INRIA - Serge STEER
4 scilab comment // This file must be used under the terms of the CeCILL.
5 scilab comment // This source file is licensed as described in the file COPYING, which
6 scilab comment // you should have received as part of this distribution. The terms
7 scilab comment // are also available at
8 scilab comment // http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
10 scilab code function I=sub2ind(dims,varargin)
11 scilab comment //sub2ind is used to determine the equivalent single index
12 scilab comment //corresponding to a given set of subscript values.
14 scilab comment //I = sub2ind(dims,i1,i2,..) returns the linear index equivalent to the
15 scilab comment //row, column, ... subscripts in the arrays i1,i2,.. for an matrix of
16 scilab comment //size dims.
18 scilab comment //I = sub2ind(dims,Mi) returns the linear index
19 scilab comment //equivalent to the n subscripts in the columns of the matrix Mi for a matrix
20 scilab comment //of size dims.
22 scilab code d=[1;cumprod(matrix(dims(1:$-1),-1,1))]
23 scilab code for i=1:size(varargin)
24 scilab code if varargin(i)==[] then I=[],return,end
27 scilab code if size(varargin)==1 then //subindices are the columns of the argument
28 scilab code I=(varargin(1)-1)*d+1
29 scilab code else //subindices are given as separated arguments
31 scilab code for i=1:size(varargin)
32 scilab code I=I+(varargin(i)-1)*d(i)
35 scilab code endfunction