On Friday 16 January 2009, Eric Firing wrote: > Neal Becker wrote: > > pylab.plot (xaxis, log10 (the_sum)*10) > > where xaxis is numpy array, and log10(the_sum)*10 is my own class that is > > a valid python sequence (it is a c++ wrapper around boost::ublas), gives: > > File "/usr/lib/python2.5/site-packages/matplotlib-0.98.5.2-py2.5-linux- > > x86_64.egg/matplotlib/pyplot.py", line 2096, in plot > > ret = gca().plot(*args, **kwargs) > > File "/usr/lib/python2.5/site-packages/matplotlib-0.98.5.2-py2.5-linux- > > x86_64.egg/matplotlib/axes.py", line 3277, in plot > > for line in self._get_lines(*args, **kwargs): > > File "/usr/lib/python2.5/site-packages/matplotlib-0.98.5.2-py2.5-linux- > > x86_64.egg/matplotlib/axes.py", line 394, in _grab_next_args > > for seg in self._plot_2_args(remaining, **kwargs): > > File "/usr/lib/python2.5/site-packages/matplotlib-0.98.5.2-py2.5-linux- > > x86_64.egg/matplotlib/axes.py", line 267, in _plot_2_args > > if is_string_like(tup2[1]): > > File "/usr/lib/python2.5/site-packages/matplotlib-0.98.5.2-py2.5-linux- > > x86_64.egg/matplotlib/cbook.py", line 277, in is_string_like > > try: obj + '' > > RuntimeError: check:: failed > > > > If I convert the 2nd arg to array, it works: > > pylab.plot (xaxis, np.array(log10 (the_sum)*10)) > > > > Doesn't plot support arbitrary sequences? > > Partial correction to my previous post: > is_string_like looks for a TypeError or ValueError to be raised. I > suppose we could look for any exception, since your object raises a > RuntimeError. > > I wonder whether it would be equally effective and more robust if the > test were > > try: '' + obj > > instead of the other way around. > > Eric
IIRC, boost::python translates c++ exceptions to RuntimeError. If true, then it's a lot easier to fix matplotlib than to fix boost::python wrappers. ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
