假设您要选择A(1:2,2:3):

% Row and column indexes
rind = 1:2;
cind = 2:3;

pos  = bsxfun(@plus,rind', size(A,2)*(cind-1));

pos =
     6    11
     7    12

您可能希望将其重塑为列向量pos(:)，或者在一行中调用reshape().

You might want to reshape it into a column vector pos(:), or in one line with a call to reshape().