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K3D-tools / K3D-jupyter

K3D lets you create 3D plots backed by WebGL with high-level API (surfaces, isosurfaces, voxels, mesh, cloud points, vtk objects, volume renderer, colormaps, etc). The primary aim of K3D-jupyter is to be easy for use as stand alone package like matplotlib, but also to allow interoperation with existing libraries as VTK.
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AttributeError: 'Line' object has no attribute 'display' #368

Closed Tsingularity closed 2 years ago

Tsingularity commented 2 years ago

Description

I installed k3d using conda install -c conda-forge k3d and I can successfully import it in the notebook. However, when I am trying to run the following example in the doc:

import k3d
plot = k3d.line([[0, 0, 0],
                 [1, 1, 1]])
plot.display()

It got the following error for the display function: AttributeError: 'Line' object has no attribute 'display'.

I installed nodejs in my conda env and also enabled nbextention as described in the readme, but the above error still exists.

Could you please take a look at this issue? Huge thanks in advance!

Tsingularity commented 2 years ago

i just found that, after remove .display(), the plot is displayed in the notebook lol. Just wondering any idea why this could happen? image

Tsingularity commented 2 years ago

and looks like other type of plot's display() works for me. So I guess the doc's first plot example is outdated and misleading? image

tgandor commented 2 years ago

Hi, line is an object, which can be displayed on a plot (or multiple plots for that matter). So it's the plot that should be displayed.

Using just a line object as Jupyter cell value causes creating of an implicit Plot, and displaying it below the cell. This is a convenience feature, normally you should create a plot and add objects to it plot += k3d.line(...) etc.

When you're done, you can .display() the plot, when the scene is ready (and not re-render it after every object added).

Tsingularity commented 2 years ago

Thanks for the help!

Just in case someone else encounter the same issue as me, could u please modify the installation doc? Thanks! image