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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.
MIT License
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Grid bounds and scaling #335

Closed parkero closed 2 years ago

parkero commented 2 years ago

Hello and thanks for the great library. I have run into the following problem and I was wondering if I could get some insight.

How to describe the following grid in k3d?

I am attempting to create a grid with the following bounds

xmin, xmax = (-3, 3) # x domain
ymin, ymax = (-3, 3) # y domain
zmin, zmax = (0, 1) # probability of occurrence

Visualized as a cube(oid) very similar to: (ignore surfaces)

I have tried the following (minimized) code sample without success:

import k3d
import numpy as np

xmin, xmax, xres = (-3, 3, 25)
ymin, ymax, yres = (-3, 3, 25)

plot = k3d.plot(grid=[xmin, ymin, 0, xmax, ymax, 1], grid_auto_fit=False)
plot.display()

which produces: k3dbounds which is -1 to 2 on Z instead of 0 to 1 as expected

Any advice?

artur-trzesiok commented 2 years ago

K3D have internal prcedure "ensureTwoTicksOnGrids": https://github.com/K3D-tools/K3D-jupyter/blob/main/js/src/providers/threejs/initializers/Scene.js#L61

At this point we cannot control it - it is always enabled.

artur-trzesiok commented 2 years ago

Main problem is that without 2 ticks we will lost a information about scale: image

We have consistent ticks for every axis.

artur-trzesiok commented 2 years ago

Prototype of solution: image

artur-trzesiok commented 2 years ago

Please download new version of k3d@2.13.0:

It should be there :)

parkero commented 2 years ago

@artur-trzesiok Thant's great! And thank you again for the library.