rc1 comment.

As per @ellisonbg testing RC1 and commenting, apologies for shortness, I’ll assume you want efficiencies and quick review for SciPy.

It looks really great ! Here are what goes through my mind as explore. Sorry if it’s all over the place.

Altair requires the following dependencies:

numpy
pandas
py.test

If this is true, it should be in setup.py install_requires, or don’t say it. You also requires traitlets in setup.py , which is an indirect dependency, I suggest removing.

I suggest making a

extras_require = dict(
 'test' = [...],
 'notebook' = [...]
 'jupyter' = [...]
)

if you want to.

Does it needs jupyter nbextension enable vega --py --sys-prefix as said during the installation step (a word on that might be good)

Installation when smoothly ; It works.

• I was confuse the docs in notebooks, I was searching for docs/notebook.
• I’m confused by the dotted line around graph, and the fact that save freeze the graph as PNG (but I might have bad ipywidgets)
• The colors and style looks great.
• The PNGs looks blurry to me
  • I registed altair.readtehdocs.io, made Brian and Jake maintainer/owner.
• .encode(...) has a strong bytes/unicode meaning to me.
• Same case kwargs feel weird timeUnit, labelAngle
• Examples implicitely display things as they are last cells statements, I guess people might get confused.
• I still like the color.
• rename notebook with leading number, Introduction / index are not the firsts.

[Carreau]

question:

in this example:

Chart(cars).mark_circle().encode(
    x='Horsepower',
    y='Miles_per_Gallon',
    color='Origin',
    size='Acceleration'
)

would it be possible at some future point to use:

Chart(cars).mark_circle().encode(
    x='Horsepower',
    y='Miles_per_Gallon',
    color='Origin',
    size=cars.Acceleration
)

to be smart and figure back the name of the column ?

you use the _.<attributes> in some places as well.

The more I read the more I like it.

[Carreau]

Releasing 1.0 now, closing…

Not all things have been fixed , I for example still have blurry PNGs.