msoechting/lexcube

Lexcube: 3D Data Cube Visualization in Jupyter Notebooks

lexcube's Issues

Render nothing in jupyter notebook[BUG]

Hi Maximilian,

Thank you for your excellent work. I have installed lexcube but encountered an issue - the images are not rendering (no error reported), and I'm not sure what's causing it.

[BUG] Google Colab not rendering

I was drawn to this library and was trying to render datacube as well.

I was able to run the codes as shown in example but wasn't able to see anything in google colab. I hereby attached the image.

lexcube seems to work in Python >= 3.10 only

Describe the bug
Hi @msoechting ,

I was just trying lexcube (it looks awesome!) and ran into an error when using it from Python 3.9. In Python 3.10 it works nicely.

To Reproduce
Steps to reproduce the behavior:
Install lexcube in a Python 3.9 environment and run this code:

import lexcube

This error pops up:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[1], line 1
----> 1 import lexcube
      2 import xarray as xr
      3 import numpy as np

File ~\mambaforge\envs\bio39\lib\site-packages\lexcube\__init__.py:20
      1 #!/usr/bin/env python
      2 # coding: utf-8
      3 
   (...)
     17 # You should have received a copy of the GNU General Public License
     18 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
---> 20 from .cube3d import Cube3DWidget, Sliders
     21 from ._version import __version__
     23 def _jupyter_labextension_paths():

File ~\mambaforge\envs\bio39\lib\site-packages\lexcube\cube3d.py:46
     41     def cancel(self):
     42         self._task.cancel()
     45 @widgets.register
---> 46 class Cube3DWidget(widgets.DOMWidget):
     47     _model_name = Unicode('Cube3DModel').tag(sync=True)
     48     _model_module = Unicode(module_name).tag(sync=True)

File ~\mambaforge\envs\bio39\lib\site-packages\lexcube\cube3d.py:70, in Cube3DWidget()
     66 zwrap = Bool(False).tag(sync=True)
     68 isometric_mode = Bool(False).tag(sync=True)
---> 70 def __init__(self, data_source, cmap: str | list | None = None, vmin: float | None = None, vmax: float | None = None, isometric_mode: bool = False, use_lexcube_chunk_caching: bool = True, **kwargs):
     71     super().__init__(**kwargs)
     72     self.cmap = cmap

TypeError: unsupported operand type(s) for |: 'type' and 'type'

Expected behavior
A clear and concise description of what you expected to happen.

Either this bug could be fixed, or the installation instructions should mention support for Python >= 3.10 only. Also this line should be removed:

lexcube/pyproject.toml

Line 31 in a2b5fc1

"Programming Language :: Python :: 3.9",

And this one modified:

lexcube/pyproject.toml

Line 13 in a2b5fc1

requires-python = ">=3.9"

I'm happy to send a pull-request with either one of the solutions if you like.

Best,
Robert

Addition of geographic information

** Feature request**
Hi Maximilian,

Lexcube is very interesting. I played with the web interface a little bit (https://www.lexcube.org/?!esdc-3.0.2/air_temperature_2m/0-1976/0-718/596-1312) and also with a sample ocean model output of temperature (a 4D dataset) in a jupyter lab framework. Working with geophysical fields mostly (coupled atmosphere and ocean model) it would be useful to be able to add coastlines and coordinates gridlines.

** Solution **
Something similar to cartopy coastlines feature and gridlines.
(ex. latitude and latitude gridlines at specific intervals, i.e like regular 10 degrees.
Same thing for vertical z coordinates, ex depth at 10m intervals, ...)

Just an example ...

https://scitools.org.uk/cartopy/docs/v0.13/index.html

Jean-Marc

Ability to click through individual timeframes, e.g. with keyboard

Describe the solution you'd like

I use the viz a lot for debugging my data. It would often be nice to be able to tap through each timestep manually. Dragging with the mouse is imprecise and much slower.

This could either be a button or some key on the keyboard.