Canvas.cgm() doesn't seem to work

[ghost]

@doutriaux1 looks like this one is either deprecated or not implemented. Let me know which and I will note it in the docs.

>>> a=vcs.init()
>>> array=[range(10) for _ in range(10)]
>>> a.plot(array)
>>> a.cgm('bars.cgm')
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-57-289541cfb4d2> in <module>()
----> 1 a.cgm('bars')

/Users/brown308/anaconda/envs/2.8/lib/python2.7/site-packages/vcs/Canvas.pyc in cgm(self, file, mode)
   4010                 "cgm only supports 'w' mode ignoring your mode ('%s')" %
   4011                 mode)
-> 4012         return self.backend.cgm(file)
   4013 
   4014     def clear(self, *args, **kargs):

/Users/brown308/anaconda/envs/2.8/lib/python2.7/site-packages/vcs/VTKPlots.pyc in cgm(self, file)
   1238             plot.hideWidgets()
   1239 
-> 1240         writer = vtk.vtkIOCGM.vtkCGMWriter()
   1241         writer.SetFileName(file)
   1242         R = self.renWin.GetRenderers()

AttributeError: 'module' object has no attribute 'vtkIOCGM'

[jypeter]

I had an old issue about that in CDAT/cdat#1065

We used the vector cgm output format when vcs was based on xgks, but that's not the case any more. We can probably safely assume that people have not used cgm for a long long time

[ghost]

@jypeter awesome, thank you! I will flag it with a deprecation for now.

[durack1]

@embrown I know one person that likely uses cgm still, @doutriaux1 knows that Ben is that individual..

[doutriaux1]

@sankhesh @aashish24 there is a flag and some cgm code in the old VTK @aashish24 and I found it a while back. It would be awesomeif you could reactivate it.,

[doutriaux1]

I think this should be deprecated.

[doutriaux1]

i don't think people use cgm anymore and @scottwittenburg mentions most of context2d would likely fail.