I installed pythreejs following the instructions on the official website
pip3 install pythreejs jupyter nbextension install --user --py pythreejs jupyter nbextension enable --user --py pythreejs Looking at the output of jupyter nbextension list, everything looks fine:
Known nbextensions: config dir: /home/gael/.jupyter/nbconfig notebook section jupyter-threejs/extension enabled - Validating: OK But when I start the server (jupyter notebook), create a new (Python3) notebook, and try to run the example code
from pythreejs import * import numpy as np from IPython.display import display from ipywidgets import HTML, Text, Output, VBox from traitlets import link, dlink ball = Mesh(geometry=SphereGeometry(radius=1, widthSegments=32, heightSegments=24), material=MeshLambertMaterial(color='red'), position=[2, 1, 0]) c = PerspectiveCamera(position=[0, 5, 5], up=[0, 1, 0], children=[DirectionalLight(color='white', position=[3, 5, 1], intensity=0.5)]) scene = Scene(children=[ball, c, AmbientLight(color='#777777')]) renderer = Renderer(camera=c, scene=scene, controls=[OrbitControls(controlling=c)]) display(renderer) from pythreejs' official repository, it does not show me a visualization window embedded in the page. Instead, below the cell it displays a hash:
UmVuZGVyZXIoY2FtZXJhPVBlcnNwZWN0aXZlQ2FtZXJhKGNoaWxkcmVuPShEaXJlY3Rpb25hbExpZ2h0KGNvbG9yPSd3aGl0ZScsIGludGVuc2l0eT0wLjUsIHBvc2l0aW9uPSgzLjAsIDUuMCzigKY= I also tried with jupyter lab, and with Python2, and it had exactly the same behavior.
What am I missing?
System: Ubuntu 18.04 Jupyter Notebook version: 5.7.8
1 Answer
Looking more closely at jupyter's output in the console, I read:
[W 18:55:45.544 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20200107185531 (127.0.0.1) 14.69ms referer= Following advice for this error I do:
jupyter nbextension enable --py widgetsnbextension then start the server: and pythreejs works!!
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