Re: [Matplotlib-users] problem in plotting cylinders with differnet colour

[Benjamin R. <ben...@ou...>]

On Tue, Feb 14, 2012 at 8:58 AM, Mark Lawrence <bre...@ya...>wrote:

> On 14/02/2012 13:52, Debashish Saha wrote:
> > import numpy
> >
> > from enthought.mayavi import mlab
> >
> > #def test_mesh():
> > #"""A very pretty picture of spherical harmonics translated from
> >
> > #the octaviz example."""
> > for r in range (1,5):
> >     print r
> >
> >
> >     pi = numpy.pi
> >
> >     cos = numpy.cos
> >
> >     sin = numpy.sin
> >
> >     dphi, dtheta, dz = pi/250.0, pi/250.0, 0.01
> >
> >     #[phi,theta] =
> numpy.mgrid[0:pi+dphi*1.5:dphi,0:2*pi+dtheta*1.5:dtheta]
> >     [phi,z] = numpy.mgrid[0:2*pi+dphi*1.5:dphi,0:2+dz*1.5:dz]
> >
> >     m0 = 4; m1 = 3; m2 = 2; m3 = 3; m4 = 6; m5 = 2; m6 = 6; m7 = 4;
> >
> >    # r = sin(m0*phi)**m1 + cos(m2*phi)**m3 + 5*sin(m4*theta)**m5 +
> > cos(m6*theta)**m7
> >
> >     #x = 1*sin(phi)*cos(theta)
> >
> >     #y = 1*sin(phi)*sin(theta)
> >
> >     #z = 1*cos(phi);
> >     x=r*cos(phi)
> >     y=r*sin(phi)
> >     z=z
> >     i=['Reds','greens','autumn','purples']
> >     print i[r-1]
> >     e=i[r-1]
> >
> >     mlab.mesh(x, y, z,colormap='e')
> >     #print i[r-1]
> >
> > Error:
> > TypeError                                 Traceback (most recent call
> last)
> > C:\Python27\lib\site-packages\IPython\utils\py3compat.pyc in
> > execfile(fname, glob, loc)
> >     166             else:
> >     167                 filename = fname
> > -->  168             exec compile(scripttext, filename, 'exec') in glob,
> loc
> >     169     else:
> >     170         def execfile(fname, *where):
> >
> > C:\Users\as\jhgf.py in<module>()
> >      24     print i[r-1]
> >      25     e=i[r-1]
> > --->  26     mlab.mesh(x, y, z,'e')
> >      27     #print i[r-1]
> >
> >      28
> >
> > C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
> > the_function(*args, **kwargs)
> >      32 def document_pipeline(pipeline):
> >      33     def the_function(*args, **kwargs):
> > --->  34         return pipeline(*args, **kwargs)
> >      35
> >      36     if hasattr(pipeline, 'doc'):
> >
> > C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
> > __call__(self, *args, **kwargs)
> >      77             scene.disable_render = True
> >      78         # Then call the real logic
> >
> > --->  79         output = self.__call_internal__(*args, **kwargs)
> >      80         # And re-enable the rendering, if needed.
> >
> >      81         if scene is not None:
> >
> > C:\Python27\lib\site-packages\mayavi\tools\helper_functions.pyc in
> > __call_internal__(self, *args, **kwargs)
> >     830         filters.
> >     831         """
> > -->  832         self.source = self._source_function(*args, **kwargs)
> >     833         kwargs.pop('name', None)
> >     834         self.store_kwargs(kwargs)
> >
> > TypeError: grid_source() takes exactly 3 arguments (4 given)
> >
> >
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>
> Didn't this get answered on the python tutor mailing list within the
> last couple of hours?  What's with it with you?
>
> --
> Cheers.
>
> Mark Lawrence.
>
>
A couple of things I would like to point out here:

1.) It is possible that Debashish sent similar questions to multiple
mailing lists in the hopes to maximize the chance of getting a response.
It may only "appear" that this thread was started after having the question
answered on another mailing list because of the delays that are notorious
on this list.  I suspect he sent both emails at around the same time, but
the python tutors list processed it faster than the matplotlib-users list.

Therefore...

2.) I would like to make sure that this mailing list remains a welcoming
forum for all users, and for all of us to understand that people have
different mailing habits that we may not be familiar with.  Therefore,
gentle reminders of mailing decorum (such as reminders to bottom-post)
should be the response, not chastising.

-- Debashish,

We are more than happy to help you.  Please keep your question to a single
mailing list at a time.  The users on the mailing list will let you know if
you should direct your question elsewhere.  In the case of your problem, it
is not matplotlib, but mayavi.  Hopefully, you have been directed to the
mayavi mailing list.

Cheers!
Ben Root