Comments (2)
That's in dendropy_version_info(major=4, minor=0, micro=3, releaselevel='') and Python 3.
I notice t.as_newick_string()
is now t.as_string(schema='newick')
.
from dendropy.
Hi,
Thank you for reporting this error. As it turned out, this was a case of the error message confusing the error message. What was happening was that the plotting encountered an error due the width not being able to be properly calculated as there were no branch lengths even thought the requested plot metric was "length":
if max_width == 0:
raise AsciiTreePlot.NullEdgeLengthError("Tree cannot be plotted under metric '%s' due to zero or null edge lengths: '%s'" % (self.plot_metric, tree.as_newick_string()))
Unfortunately, the error message composition called on an obsolete function (as_newick_string
of older code rather than the internal _as_newick_string
of the newer code), and it was this error that caused the failure and an associated error message.
This has now been fixed in the top the development-master
branch, revision a7bfde4 .
You will still get an error if you try to plot a tree with the plot metric being branch lengths and the tree has no branch lengths! But at least now, the error message should be meaningful.
from dendropy.
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