[yt-users] Streamplot error in annotate_streamlines callback

[John ZuHone]

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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