I need to read some data from a file. Each (tab delimited) row corresponds to an array index eg. 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 ... And I need something like, [[0,0,0,0,0,0], [0,1,0,0,0,0], [0,0,1,0,0,0], ...] What's the best way of doing this? Cheers in advance. Duncan Smith