py.examples do not work in conda installed ipyvolume and install from source does not work about ipyvolume HOT 8 CLOSED

So, given the error message, I guess the first question to ask is; have you (pip) installed ipywidgets >= 4.0

from ipyvolume.

Hi Casper,

the conda forge version is 0.3.x, pip has the 0.4.x alpha release, which you can install using the --pre argument. Make sure you install ipywidgets 7:

$ pip install ipywidgets~=7.0.0b1

should work (b3 might also work, but I didn't test it yet)
Hope this is useful, please let me know if there can be something improved for the installation instructions. I have to update setup.py to avoid this.

cheers,

Maarten

from ipyvolume.

@chrisjsewell Yes I have ipywidgets installed:

(hemosphere) casperl@surfsara-nghk:~$ pip list | grep ipywidgets
ipywidgets (7.0.0b2)

But ok, I found out what I did wrong I only used the github installation instructions which miss the activation of the ipywidgets nbextension given in the documentation page of ipyvolume

I wanna run it from the source code cause I am trying to figure out how to plot a mesh and how the mesh is formatted within ipyvolume so I can plot my own meshes. I see that as an input in the example you have 3, 40x40, np arrays? How does that for example relate to a set of vertices and a set triangles defined by the vertices, which is normally used to draw meshes? In the code their is no/sparse documentations and comments to figure out how it works.

Sorry for all the questions that might be obvious but wanna try it out with my own geometry and test the limits of ipyvolume when it comes to high poly simulation data.

But besides the questions the issue can be closed, cause the initial problems are solved.

Cheers,
Casper

from ipyvolume.

Hi Casper,

I've updated the installation instructions.
Yes, there is no documentation yet on meshes, there should be once 0.4 will be released. For now, you could take a look at https://github.com/maartenbreddels/ipyvolume/blob/8445780cb9cb44c84be974cc8804c55e775bfde0/docs/source/mesh.ipynb .
Take a look at plot_mesh, and plot_trisurf, where the first assumes a regular grid, and the last a series of triangles. Hope to have more proper documentation soon, and feedback is always welcome!

cheers,

Maarten

from ipyvolume.

The documentation is a bit better now at:
http://ipyvolume.readthedocs.io/en/latest/mesh.html
API docs still needs some work (will keep this open until)

from ipyvolume.

Hey Maarten,
Thanks for pointing me to the trisurf function that is indeed what I need. Now I am gonna stress test ipyvolume and see if it can take high poly simulations ;).

Was wandering though, why do you pass the x, y and z coords for the vertices separately? Not that it really matters but was wandering what the idea behind it was, cause it caused my initial confusion on how the mesh was formatted.

Thanks again, I think all of this looks very valuable for me. Besides that I have not thought about customized widgets within Jupyter notebook which for me is an eye opener for a lot of other problems I have.

from ipyvolume.

I think i'm gonna change that, for performance it's better to have the vertices in a single array. The idea was that you can do:

scatter.x = x * 2 +1

for instance. But this behaviour can be emulated using properties.
Let me know what you think of the performance!

from ipyvolume.

Since you've got it working, I'll close this, I'm happy to hear performance issues separately.

from ipyvolume.