observablehq / observablehq/plot

stackR transform?

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#197 1 comment 1 reaction 0 assignees View on GitHub

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enhancement
Dominant language
HTML
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Description

I could see a stackR transform which takes an r (radius) channel in and produces r1 and r2 output channels, which you would use in conjunction with an annulus type mark. Maybe the dot mark should allow r1 and r2 input channels and have similar behavior to barY’s y, y1, and y2 channels. The sqrt transform should ensure that the rings have area proportional to value.

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Research direction

No file, test, or entry point is identified in the issue. Start by locating the transform and annulus, dot, barY, and sqrt implementations, then clarify which proposed radial-channel behavior is wanted. Done requires an agreed API and tests for the resulting ring areas and channel behavior.

Written by the indexing model from the issue text.

Assessment

Domain
data-visualization
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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