sub2ind
Convert subscripts for an array to indices.
ind=sub2ind(arraysize,varargin)
Inputs
arraysize The size of the array as a vector of integers.
varargin The subscripts.
Outputs
ind A scalar integer which is an index into the array corresponding to the subscripts.


Description
The result is such that for an array x of size arrayszie , x[ind] and x[varargin{1},varargin{2},varargin{3},...] are identical, being the values of the same element in the array.
Example
>>a=rand(2,4,3)
>>sub2ind(size(a),1,3,2)
     13
>>a[13]==a[1,3,2]
         1