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fix: interaction in linear/log x scales #1258

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markov00
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Summary

The interaction with a log scale across the X axis is now fixed and works correctly. A bug that wrongly computes the inverse value from a projected mouse coordinate is fixed.

Before:

Jul-19-2021.16-42-33.mp4

After:

Jul-19-2021.16-42-50.mp4

Details

The inverseWithStep function takes care of inverting a set of screen coordinates to data coordinates.
We have two main scales: a continuous and a band/categorical one. There is a third scale type: a continuous scale that is actually formed by consecutive bands (used with time bar charts for example). This third scale type works like a continuous scale but the internal logic make use of bandwidth and minInterval to correctly compute the bar width.
This is true only for bar charts, for line/area charts there is no bandwidth. The code was checking for the wrong parameter, instead of bandwidth it was checking for the minInterval that is always present and > 0.

Issues

Checklist

  • The proper chart type label was added (e.g. :xy, :partition) if the PR involves a specific chart type
  • The proper feature label was added (e.g. :interactions, :axis) if the PR involves a specific chart feature
  • Whenever possible, please check if the closing issue is connected to a running GH project
  • Any consumer-facing exports were added to packages/charts/src/index.ts (and stories only import from ../src except for test data & storybook)
  • Proper documentation or storybook story was added for features that require explanation or tutorials
  • Unit tests were updated or added to match the most common scenarios

@markov00 markov00 added bug Something isn't working :interactions Interactions related issue :xy Bar/Line/Area chart related labels Jul 19, 2021
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@rshen91 rshen91 left a comment

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Nice! LGTM - tested locally, thanks for the story addition 👍🏻

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@nickofthyme nickofthyme left a comment

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Nice!! One liner magic! 🎱

@markov00 markov00 enabled auto-merge (squash) July 20, 2021 07:48
@markov00 markov00 merged commit db94db2 into elastic:master Jul 20, 2021
markov00 added a commit to markov00/elastic-charts that referenced this pull request Jul 20, 2021
nickofthyme pushed a commit that referenced this pull request Jul 20, 2021
## [32.0.1](v32.0.0...v32.0.1) (2021-07-20)

### Bug Fixes

* **xy:** interaction in linear/log x scales ([#1258](#1258)) ([#1259](#1259)) ([ca8fd30](ca8fd30))
nickofthyme pushed a commit that referenced this pull request Jul 20, 2021
## [33.0.2](v33.0.1...v33.0.2) (2021-07-20)

### Bug Fixes

* **xy:** interaction in linear/log x scales ([#1258](#1258)) ([db94db2](db94db2))
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🎉 This PR is included in version 33.0.2 🎉

The release is available on:

Your semantic-release bot 📦🚀

@nickofthyme nickofthyme added the released Issue released publicly label Jul 20, 2021
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3 participants