让Altair与Jupyter Notebook一起使用 [英] Getting Altair to work with Jupyter Notebook

问题描述

我试图使用Altpy与Jupyter Notebook一起工作，

Trying to get Altair to work with Jupyter Notebook, I installed it using

conda install -c conda-forge altair vega_datasets notebook vega

但是当我尝试绘制示例图时

But when I try to do an example plot

import altair as alt
from vega_datasets import data

# for the notebook only (not for JupyterLab) run this command once per session
alt.renderers.enable('notebook')

iris = data.iris()

alt.Chart(iris).mark_point().encode(
    x='petalLength',
    y='petalWidth',
    color='species'
)

在他们的快速入门指南中可以看到

ValueError: 
To use the 'notebook' renderer, you must install the vega package
and the associated Jupyter extension.
See https://altair-viz.github.io/getting_started/installation.html
for more information.

即使我已经使用Conda安装了vega.我可以制作维加示例图.我无法启用Jupyter扩展，因为Jupyter说它不兼容.

even though I have installed vega using Conda. I can make vega example plots though. I am unable to enable the Jupyter extension though, as Jupyter says it is incompatible.

感谢您的帮助.

推荐答案

对于最新版本的altair(2.2版)，请使用

For the current release of altair (Version 2.2), use

conda install -c conda-forge vega=1.3

或

pip install vega==1.3

然后重新启动笔记本电脑.

and then restart the notebook.

vega python扩展本周错误地更新为仅支持vega-lite 3.0，该版本尚未发布，因此Altair尚不支持.

The vega python extension was mistakenly updated this week to only support vega-lite 3.0, which is not yet released and thus not yet supported by Altair.

请参见 https://github.com/altair-viz/altair/issues/1114 以获得初始错误报告.

See https://github.com/altair-viz/altair/issues/1114 for the initial bug report.

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