Re: [Matplotlib-users] matplotlib 1.1 "TypeError: a float is required" problem

[Michael D. <md...@st...>]

I've filed a bug for this here:

https://github.com/matplotlib/matplotlib/issues/662

Mike

On 01/06/2012 11:55 AM, David Hoese wrote:
> Hi Ken,
>
> You're getting that error because you probably don't have Qt4 
> installed on your Mac (I do).  I'm not sure what backends come with 
> matplotlib and will work for you (maybe someone here knows).  You can 
> use any of the following:
> GTK GTKAgg GTKCairo CocoaAgg FltkAgg
> MacOSX QtAgg Qt4Agg TkAgg WX WXAgg Agg Cairo GDK PS PDF SVG Template
> Like Qt4, some of those may need to be installed.  I also have Gtk 
> installed (never used it before) and "GTKAgg" works for me, but not 
> "GTK".  It's also important to know that not all of those backends are 
> interactive (they don't all show a window) and the figure must be 
> saved to a file.
>
> Also make sure that the 2 lines I provided need to be BEFORE any other 
> matplotlib/pyplot imports.  Hope you find something that works for 
> you, at least until the macosx bug is fixed.  I'm not an expert, sorry.
>
> -Dave
>
> On 1/6/12 10:35 AM, Mingkui Li wrote:
>> Hi, Dave,
>>
>> I tried the two lines of code you posted, but when I ran the example 
>> I mentioned above I got such error:
>>
>> ImportError: No module named sip
>>
>> Seems I can't import any other libs from matplotlib after 
>> "matplotlib.use("Qt4Agg")"
>>
>> I'm kind of a newbie, sorry.
>>
>> Ken
>>
>>
>> On Sat, Jan 7, 2012 at 12:22 AM, David Hoese <dh...@gm... 
>> <mailto:dh...@gm...>> wrote:
>>
>>     I experienced the same problem on the macosx backend, switched to
>>     Qt4Agg
>>     and no problems.
>>
>>         import matplotlib
>>         matplotlib.use("Qt4Agg")
>>
>>     -Dave
>>
>>     On 1/6/12 10:08 AM, md...@st... <mailto:md...@st...> wrote:
>>     > I suspect this bug is specific to the macosx backend.  Can you
>>     switch to
>>     > another backend and confirm it doesn't happen there?  (I can't
>>     reproduce
>>     > it on Linux).
>>     >
>>     > Mike
>>
>>
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>>
>> -- 
>> Mingkui Li
>>
>
>
>
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