On Fri, Jun 20, 2014 at 10:27 AM, Jamie Mitchell < jamiemitchell1...@gmail.com> wrote:
> > That's great Jason thanks for the detailed response, I went with the > easier option 1! > > I am also trying to put hatches on my histograms like so: > > plt.hist(dataset,bins=10,hatch=['*']) > > When it comes to plt.show() I get the following error message: > [snip] > > File > "/usr/local/sci/lib/python2.7/site-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/path.py", > line 888, in hatch > hatch_path = cls._hatch_dict.get((hatchpattern, density)) > TypeError: unhashable type: 'list' > > Do you have any idea why this is happening? > lists are mutable types, so they are not hashable (and therefore cannot be used as dictionary keywords). You need an immutable type (which _is_ hashable) to act as a dictionary key. Like strings, tuples, and basic number types (int, float, etc.). The hatch should be a string (allowable symbols are given in the API documentation). So try plt.hist(dataset, bins, hatch='*') HTH, Jason -- Jason M. Swails BioMaPS, Rutgers University Postdoctoral Researcher
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