Daniel@0: function sub = block(blocks, block_sizes)
Daniel@0: % BLOCK Return a vector of subscripts corresponding to the specified blocks.
Daniel@0: % sub = block(blocks, block_sizes)
Daniel@0: % 
Daniel@0: % e.g., block([2 5], [2 1 2 1 2]) = [3 7 8].
Daniel@0: 
Daniel@0: blocks = blocks(:)';
Daniel@0: block_sizes = block_sizes(:)';
Daniel@0: skip = [0 cumsum(block_sizes)];
Daniel@0: start = skip(blocks)+1;
Daniel@0: fin = start + block_sizes(blocks) - 1;
Daniel@0: sub = [];
Daniel@0: for j=1:length(blocks)
Daniel@0:   sub = [sub start(j):fin(j)];
Daniel@0: end