Displays text numbers or text in the Nx1 vector v
at the coordinates of the nodes of tree intree.
By default v contains the numbers 1 to N,
a way to display node indices.
Plot is offset by XYZ 3-tupel DD and
coloured with RGB 3-tupel (or Nx1 vector, a colour value per node)
color.
ipart is an optional index for a sub-set of nodes to be plotted.
crange restricts the colour limits.
HP is the handle to the text object.
Example:
>> HP = vtext_tree (sample2_tree, ('hello!!!!')',...
eucl_tree (sample2_tree), [], [], 1:9)
← each new line in the string vector is attributed to a new node
← colour goes with Euclidean distance
← text is attributed to nodes 1 to 9
>> set (HP, 'fontname', 'times new roman');
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