PLoS supp. material by Hermann Cuntz
Plots a directed graph contained in tree structure intree.
Many settings allow to play with the output results.
Colour handling is different on line plots than on patchy '-b' or '-p'.
Even if metrics are nonexistent “plot_tree” will plot its best guess
for a reasonable tree
Line plots are always slower than any patch display.
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 whose segements are to be plotted.
res determines the resolution of the cylinders, with 8 points as a default.
options are '-2l' or '-3l' for 2D or 3D line plots,
'-2q' or '-3q' for 2D or 3D arrow plots (quiver);
see comments in “plot_tree” for more details.
HP is the handle to the graphical object.
map branch order to colour
>> plot_tree (sample2_tree, BO_tree (sample2_tree))
as a line
>> HP = plot_tree (sample2_tree, , , , , '-3l');
>> set (HP, 'marker', '.');
quiver plot of sub-tree of node #10
>> plot_tree (sample2_tree, , ,...
find (sub_tree (sample2_tree, 10)), , '-3q');
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