For sage worksheets, I've created
https://github.com/sagemathinc/cocalc/issues/2450
On Sun, Oct 29, 2017 at 1:12 PM William Stein <wst...@gmail.com> wrote:
> On Sun, Oct 29, 2017 at 9:31 AM Simon Willerton <
> s.willer...@sheffield.ac.uk> wrote:
>
>> I have the following code to help my students visualize surfaces
>>
>> t, theta = var('t, theta', domain='real')
>> x(t) = cosh(t)
>> z(t) = t
>> formula = (x(t)*cos(theta), x(t)*sin(theta), z(t))
>> parameters = ((t, -3, 3), (theta, -pi, pi))
>> surface = ParametrizedSurface3D(formula, parameters)
>> show(surface.plot(aspect_ratio=1, color='yellow'), viewer='threejs')
>>
>> This works fine in SageMathCell (running SageMath 8.0) see
>>
>> http://simonwillerton.staff.shef.ac.uk/teaching/MAS336/sage_cell_surfaces.html
>> The reason I'm using threejs is so that many plots can been seen on a
>> single page. Without it (using jmol, I think) this wasn't possible.
>>
>> The code also works fine in a jupyter notebook running SageMath 8.0 on OS
>> X in both firefox and chrome.
>>
>> However the code does not run in SageMath 8.0 on CoCalc. In a sagews it
>> actually gives an error,
>>
>
> It works fine in CoCalc (and uses threejs) if you do not give the viewer=
> option.
>
> and in Jupyter (on firefox or chrome) the image just never appears.
>> Changing the kernel to 7.6 on Jupyter on CoCalc allows the image to appear
>> correctly.
>>
>> Should I not be using threejs or is the problem with CoCalc?
>>
>> Cheers,
>>
>> Simon
>>
>>
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> --
> -- William Stein
>
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-- William Stein
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