Would be nice if regression transform would be supported to make it simple to create scatter plots with superimposed regression line: https://vega.github.io/vega-lite/docs/regression.html
The regression transform will be introduced in Vega-Lite 4.0, which has not yet been released yet. Once it's released, we'll work on supporting it in Altair.
Most helpful comment
The regression transform will be introduced in Vega-Lite 4.0, which has not yet been released yet. Once it's released, we'll work on supporting it in Altair.