[yt-users] Streamplot error in annotate_streamlines callback

[Ji Suoqing]

Hi John and Nathan,

I see… Now it works -- many thanks!

Best wishes,
Suoqing

On Jun 1, 2013, at 6:17 PM, John ZuHone <jzuhone at gmail.com> wrote:

> Hi Suoqing,
> 
> I think you may need to upgrade matplotlib... Older versions didn't have this functionality. This would be the case if you installed yt a while back.
> 
> try:
> 
> pip install -U matplotlib 
> 
> Best,
> 
> John 
> 
> John ZuHone
> Laboratory for High-Energy Astrophysics
> NASA/Goddard Space Flight Center
> 8800 Greenbelt Rd., Code 662
> Greenbelt, MD 20771
> (w) 301-286-2531
> (m) 773-758-0172
> jzuhone at gmail.com
> john.zuhone at nasa.gov
> 
> On Jun 1, 2013, at 5:44 PM, Ji Suoqing <jisuoqing at gmail.com> wrote:
> 
>> Hi,
>> 
>> Currently I'm using the plot modification callback "annotate_streamlines". However, I got the following error:
>> 
>> Traceback (most recent call last):
>>   File "magnetic_streamline.py", line 9, in <module>
>>     slc.annotate_streamlines('magx','magy',factor=10.0,density=6)
>>   File "/aphelion/jisuoqing/sw/yt-x86_64/src/yt-hg/yt/visualization/plot_window.py", line 101, in newfunc
>>     args[0]._setup_plots()
>>   File "/aphelion/jisuoqing/sw/yt-x86_64/src/yt-hg/yt/visualization/plot_window.py", line 935, in _setup_plots
>>     self.run_callbacks(f)
>>   File "/aphelion/jisuoqing/sw/yt-x86_64/src/yt-hg/yt/visualization/plot_window.py", line 955, in run_callbacks
>>     callback(cbw)
>>   File "/aphelion/jisuoqing/sw/yt-x86_64/src/yt-hg/yt/visualization/plot_modifications.py", line 450, in __call__
>>     plot._axes.streamplot(X,Y, pixX, pixY, density = self.dens,
>> AttributeError: 'Axes' object has no attribute 'streamplot'
>> 
>> Now my yt version code is 2ad91aa91e30. In another desktop I remain another version 04fa9a7d799c, in which the annotate_streamlines callback works for the same data file.
>> 
>> Thanks a lot!
>> 
>> Best wishes,
>> Suoqing
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