PLoS supp. material by Hermann Cuntz
resampling allows for more
“attaching” points on the tree
Attaches cylinders with diameter dhead to closest node
on an existing tree intree,
introducing a neck with diameter dneck.
If XYZ coordinates XYZ are not defined,
the spines are attached to a randomly picked node
with distance mlneck ± stdlneck.
XYZ parameter becomes the number of spines
If region with name "spines" exists then nodes are appended
to that region otherwise new nodes are attributed
to new region named "spines“.
ipart is an optional index for attaching spines
only to a sub-set of nodes.
>> rtree = resample_tree (sample2_tree, .2);
>> spines_tree (rtree, 200, , , , , find (rtree.D<3))
← 200 random spines,
only attached to nodes where diameter is smaller than 3
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