]m=: 1 0 0, 0 1 0,: 0 1 0 1 0 0 0 1 0 0 1 0 ]i=:4$.$. m 0 0 1 1 2 1 ]m2=:1 (<"1 i)} 3 3$0 1 0 0 0 1 0 0 1 0 ]s=:$.m2 0 0 │ 1 1 1 │ 1 2 1 │ 1
Can I get s from i without going through the dense matrix form?
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