Hello all,

I have a question,

I have a vector that is previously vectorized out of a symatrical matrix and has the following form. (lengt 1 x L(L+1)/2 )

`v = 1, 2*6, 2*7, 2*8, 2*9, 2, 2*10, 2*1,1 2*12, 3, 2*13, 2*14, 4, 2*15, 5`

I now want to obtain the same matrix as before (Matrix H) of the underneath form (lengt L x L). How can I obtain this matrix out of above vector?

`H = 1 6 7 8 9 6 2 10 11 12 7 10 3 13 14 8 11 13 4 15 9 12 14 15 5`

thanks in advance

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