[SciPy-user] Re: Enthought python

Ryan Krauss ryanfedora at comcast.net
Wed Jul 20 08:42:17 CDT 2005

Thanks again.  Running Ipython without any switches gets rid of that error.

I normally run Ipython with the -pylab switch for 2d plotting.  It would 
be great not to have to run seperate sessions for 2d and 3d 
visualization.  Is there any way we can make this work with the -pylab 



Prabhu Ramachandran wrote:

>>>>>>"Ryan" == Ryan Krauss <ryanfedora at comcast.net> writes:
>    Ryan> Alright, we are getting close.  I added C:\Python23\scripts
>    Ryan> to the windows path and moved the dll there (I don't think
>    Ryan> it was already there), and now tesk_vtk finishes correctly.
>    Ryan> v.Render() # Re-render the scene.
>    Ryan> (Aftter running the preceding portion to generate the data.)
>    Ryan> The visualization pops up but so does an error message that
>    Ryan> says: ERROR: In
>    Ryan> C:\aap\src\VTK\Rendering\vtkWin32OpenGLRenderWindow.cxx,
>    Ryan> line 216 vtkWin32OpenGLRenderWindow (0x06592F70):
>    Ryan> wglMakeCurrent failed in MakeCurrent(), error: The requested
>    Ryan> resource is in use.
>Great, atleast we have something that atleast displays something on
>screen.  I've never seen this error but think I've seen similar
>messages on the VTK mailing list a while back.
>How exactly did you run the example?  Did you use IPython or IDLE or
>the vanilla interpreter?  It looks like a threading issue.
>    Ryan> I was getting this same error last night at home.  I had
>    Ryan> installed EntoughtPython and the above example worked out of
>    Ryan> the box.  But as soon as I updated either Ipython or
>    Ryan> Matplotlib to the current versions, I started getting the
>    Ryan> above error.
>If you are using IPython, Enthought's IPython icon starts ipython as
>ipython -wthread -p enthought or something like that.  MayaVi is a
>Tkinter application and does not work too well with ipython -wthread
>(even with the -tk option).  SO try running Ipython as is without any
>extra options and see if that helps.
>    Ryan> Thanks again for your help Prabhu.  I think we are getting
>    Ryan> close.
>Yes, I'll try and create a new ZIP file and fix the
>vtkRenderingPythonTkWidgets issue this weekend.  I am not sure why you
>get the wglMakeCurrent error.
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