On Tuesday 09 February 2010 17:38:18 Nick Schurch wrote:
> HI all,
>
> I've been using matplotlip for a while now but mainly for line plots,
> scatter plots and the odd dendrogram. I recently tried plotting a
> histogram (of a binomial function) and encountered a problem. So I
> though I'd try the extremely simple example set on the front of the
> matplotlib page.... and heres what I got:
>
> Python 2.4.3 (#1, Sep  3 2009, 15:37:12)
> [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>
> >>> from pylab import randn, hist
> >>> x = randn(10000)
> >>> hist(x, 100)
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/lib/python2.4/site-packages/matplotlib/pyplot.py", line
> 1633, in hist
>     ret =  gca().hist(*args, **kwargs)
>   File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 5060, in
> hist align=align, log=log)
>   File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 3253, in
> bar assert len(height)==nbars, "argument 'height' must be %d or scalar" %
> nbars AssertionError: argument 'height' must be 101 or scalar
>
> Any idea why this isn't working? I have matplotlib v0.91.2 - will
> updating to 0.99 solve the problem?

Hi, 

I'm using 

Python 2.5.2 (r252:60911, Jan 20 2010, 21:48:48) 
[GCC 4.2.4 (Ubuntu 4.2.4-1ubuntu3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from pylab import randn, hist, show
>>> x = randn(10000)
>>> hist(x, 100)
>>> show()
>>> import matplotlib
>>> matplotlib.__version__
'0.91.2'

and get a nice figure with a 100-bins histogram. I don't know what's going 
wrong with your installation.

Kind regards,
Matthias

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