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Transpose Ragged Array | Index << >> |
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I’m trying to transpose a vector of different length vectors, essentially a ragged matrix. The only way I can think of to do it is to introduce a special value which is subsequently removed:
transpose←{
n←≢¨⍵
m←⌈/n
f←⎕NULL
m←↓⍉⊃⍵,¨(m-n)⍴¨f
m~¨f
}
transpose (1 2 3) (4 5) (6 0 7 8 9)
┌─────┬─────┬───┬─┬─┐
│1 4 6│2 5 0│3 7│8│9│
└─────┴─────┴───┴─┴─┘
Dyalog Forum post by paulmansour, 2017-07-24 |