observablehq / observablehq/plot

ensure an axis has at least two ticks

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enhancement
Dominant language
HTML
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Description

In most conditions a continuous axis (temporal or quantitative) should always show at least 2 ticks, so we get an idea of its domain. I believe that this should even be a default.

What we want to avoid is this situation which sometimes happens with responsive charts, and is hard to control.

before

instead we want
after

And if there isn't enough space, it's better to have min and max, even if they are a bit crammed into each other, than just a non-informative 0.

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Research direction

Review the continuous temporal and quantitative axis tick-generation behavior described in this issue, including responsive charts. Done means the default produces at least two informative ticks, preferably min and max when space is tight, rather than a lone 0; verify both axis types and constrained layouts.

Written by the indexing model from the issue text.

Assessment

Tech stack
d3
Domain
data-visualization
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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