Re: [Matplotlib-users] TypeError: unsupported operand type(s) for +: 'NoneType' and 'float' on 1.2.1

[Brian B. <fo...@gm...>]

Greetings all,

I have this problem now as well. I use a Mac with Canopy installed and it was working fine until I recently updated my packages and got the new matplotlib. The code which reproduces this error for me is very simple:

{{{
x = scipy.random.normal(0,1,100)

f = figure(num=1)
f.clear()
ax = f.add_subplot(111)
ns,bns,plt0  = ax.hist(x,bins=10,log=True)
plt1 = ax.bar(bns[0:-1],ns,width=bns[1:]-bns[0:-1],color='r',log=True)
draw()
}}}


The code works fine if one comments out the ax.bar usage but fails otherwise. I have tried multiple different kwargs or removing the second "log=True" and all result in the same TypeError.

Regards,
Brian



On Apr 18, 2013, at 12:42 PM, Michael Droettboom <md...@st...> wrote:

> Can you please provide a complete, minimal and self-contained script 
> that reproduces the error?  The example below has many undefined 
> variables etc.
> 
> Cheers,
> Mike
> 
> On 04/16/2013 07:09 PM, Christophe Pettus wrote:
>> # preamble code collecting data
>> 
>>     ind = np.arange(len(table_name))
>> 
>>     width = 0.35
>> 
>>     fig = plot.figure(figsize=DEFAULT_FIGURE_SIZE)
>>     ax = fig.add_subplot(111, axisbg='#fafafa', alpha=0.9)
>> 
>>     ax.set_title('Largest Tables')
>> 
>>     ax.set_xlabel('Size (log scale)')
>> 
>>     ax.set_xscale('log')
>>     ax.grid(True)
>> 
>>     ax.xaxis.set_major_formatter(FuncFormatter(magnitude_ticks))
>> 
>>     dbar = ax.barh(ind, data_size, width, linewidth=0, color='blue', label='Main Data')  # exception here
>>     ibar = ax.barh(ind, index_toast_size, width, left=data_size, linewidth=0, color='red', label='Toast/Indexes')
>>     ax.set_yticks(ind + width/2)
>>     ax.set_yticklabels(table_name, fontproperties=xx_small_font)
>> 
>>     ax.legend(loc='lower right', prop=x_small_font)
>> 
>>     plot.tight_layout()
>> 
>>     plot.savefig(REPORT_DIR_PATH + '/table_sizes.pdf')
>> 
>>     plot.close()
> 
> 
> ------------------------------------------------------------------------------
> Precog is a next-generation analytics platform capable of advanced
> analytics on semi-structured data. The platform includes APIs for building
> apps and a phenomenal toolset for data science. Developers can use
> our toolset for easy data analysis & visualization. Get a free account!
> http://www2.precog.com/precogplatform/slashdotnewsletter
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users