dendrogram.plotter .plot_tree not working for various structure inputs

I was having a problem using .plot_tree for my structure, so I thought I was inputting the structure with the wrong type. But I cannot even reproduce the example on the page: http://dendrograms.readthedocs.io/en/stable/plotting.html#making-plots-for-publications

So, it may be a larger issue? @keflavich

Thanks for the help, Cara

=================================== Here is my implementation of the example code, except for changing my path:

from astrodendro import Dendrogram
from astropy.io import fits
import matplotlib.pyplot as plt
from astropy.io.fits import getdata

path='path'

image = fits.getdata(path+'PerA_Extn2MASS_F_Gal.fits')
d = Dendrogram.compute(image, min_value=2.0, min_delta=1., min_npix=10)
p = d.plotter()

fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)

# Plot the whole tree
p.plot_tree(ax, color='black')

# Highlight two branches
p.plot_tree(ax, structure=8, color='red', lw=2, alpha=0.5)
p.plot_tree(ax, structure=24, color='orange', lw=2, alpha=0.5)

# Add axis labels
ax.set_xlabel("Structure")
ax.set_ylabel("Flux")

=================================== And the resulting error messages:


TypeError                                 Traceback (most recent call last)
<ipython-input-9-65bc8976f5c9> in <module>()
     16 
     17 # Highlight two branches
---> 18 p.plot_tree(ax, structure=8, color='red', lw=2, alpha=0.5)
     19 p.plot_tree(ax, structure=24, color='orange', lw=2, alpha=0.5)
     20 

/Users/battersby/anaconda/lib/python2.7/site-packages/astrodendro/plot.pyc in plot_tree(self, ax, structure, subtree, autoscale, **kwargs)
    101 
    102         # Get the lines for the dendrogram
--> 103         lines = self.get_lines(structures=structure, **kwargs)
    104 
    105         # Add the lines to the axes

/Users/battersby/anaconda/lib/python2.7/site-packages/astrodendro/plot.pyc in get_lines(self, structures, subtree, **kwargs)
    191         else:
    192             if subtree:
--> 193                 if type(structures[0]) is int:
    194                     structure = self.dendrogram[structures[0]]
    195                 else:

TypeError: 'int' object has no attribute '__getitem__'

dendrograms / astrodendro

dendrogram.plotter .plot_tree not working for various structure inputs #157