Returns for tree intree an Nx1 vector idpar containing the direct parent indices for each node.. Parent node of root is 1 by default. Use '-0' option to set root parent to 0.

TREES

Example:

>> idpar_tree (sample2_tree)'

[1, 1, 2, 3, 4, 5, 6, 7, 6, 3, 10, 11, 12, 12, 10]

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