Mike Bostock

Tooltips (e.g., for a scatterplot, or for a multi-line chart)?

4

Related #4 which talks more generically about pointer interaction.

It’d be nice if you could say ```js Plot.rectY(athletes, Plot.binX({y: "percent"}, {x: "weight"})).plot() ``` and it would be equivalent to ```js Plot.rectY(athletes, Plot.binX({y: "proportion"}, {x: "weight"})).plot({y: {percent: true}}) ```

Labeling algorithms (e.g., occlusion)?

12

In some line plots, if the cardinality of z is relatively low, it would be nice to label the lines say at the start or end. Similarly for dot plots,...

Hover interaction.

12

It’d be nice to have a tooltip that shows the value nearest the mouse.

Beeswarm plot?

2

Some sort of dodge transform?

Optimize field shorthand for columnar data?

3

We currently support field (named properties specified as strings) as channel value shorthand, e.g., `y: "foo"` is upgraded to `y: d => d["foo"]` or equivalently `y: data.map(d => d["foo"])`. For...

Plot.initialize

6

A debugging routine, e.g., ```js function Plot_initialize(data, {transform, ...channels} = {}) { data = arrayify(data); let index = data == null ? undefined : Uint32Array.from(data, (d, i) => i); if...

Color gradients?

4

It’d be nice to have a way to specify a color gradient, presumably spanning the chart area in either x or y, with some given color stops.

Brushing

22

Brush a rectangular region to select data.