revise box & violin hover labels - improve order & handle duplicates

[archmoj]

@plotly/plotly_js
cc: @sstripps1

[sstripps1]

Thank you so much for this!

[alexcjohnson]

Definite improvment! But there may still be cases to investigate... If I load box_plot_jitter_edge_cases (and call Plotly.relayout(gd,'hovermode','x') because otherwise I can't get any hover as the boxes have no size!) two issues occur to me:

(1) median should go in the middle, but it appears first:

(2) What determines whether upper fence and lower fence labels are included? In the first two traces upper fence appears but not lower fence. In the latter two (as in the image above) neither appears. Maybe they're included only when they're different from max or min respectively? I'd think based on the goal of this PR we should always show all of these labels - ie min, lower fence, q1, median (and mean if it's displayed), q3, upper fence, max. The only exception I can think of is boxpoints=false when we extend the fences to min and max so we shouldn't show upper fence or lower fence.

[archmoj]

(2) What determines whether upper fence and lower fence labels are included? In the first two traces upper fence appears but not lower fence. In the latter two (as in the image above) neither appears. Maybe they're included only when they're different from max or min respectively? I'd think based on the goal of this PR we should always show all of these labels - ie min, lower fence, q1, median (and mean if it's displayed), q3, upper fence, max. The only exception I can think of is boxpoints=false when we extend the fences to min and max so we shouldn't show upper fence or lower fence.

This part is addressed in f726248 and e189c4d.

[archmoj]

Definite improvment! But there may still be cases to investigate... If I load box_plot_jitter_edge_cases (and call Plotly.relayout(gd,'hovermode','x') because otherwise I can't get any hover as the boxes have no size!) two issues occur to me:

(1) median should go in the middle, but it appears first:

This is addressed in e2f6d0c.

[archmoj]

@alexcjohnson this PR is ready for another round of review. Thank you 🙏

[alexcjohnson]

💃 Very nice!