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Support object values for bar charts #6323

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merged 4 commits into from Jun 19, 2019
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nagix
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@nagix nagix commented Jun 7, 2019

This PR resolves the following problems:

  1. Fixed misplaced data points on category scale #4062 fixed the issue of object values ({x, y}) for category scales, but if the label is a falsy value such as 0 and '', that point is not correctly handled.
  2. Object values don't fully work for category scales in bar chars because getPixelForValue doesn't accept datasetIndex to handle object values for the ruler in bar charts.

Note that bars for the same label won't be stacked even if the stack options are enabled because the current implementation only supports index-based stacking, not label-based stacking. That is not the scope of this PR. So, a bar will simply overlay the other bars with the same label.

Master: https://jsfiddle.net/nagix/yhzsgnae/
Screen Shot 2019-06-08 at 12 18 03 AM

This PR: https://jsfiddle.net/nagix/zpcou3Lh/
Screen Shot 2019-06-08 at 12 18 23 AM

The motivation of this PR is to support this type of 'column range chart' as well as gantt chart. I will open another PR to add support for object values for floating bars.

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@benmccann benmccann left a comment

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lgtm. just one small comment

src/scales/scale.category.js Outdated Show resolved Hide resolved
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nagix commented Jun 8, 2019

I also refactored the entire category scale code. It is reduced by 154 bytes.

benmccann
benmccann previously approved these changes Jun 12, 2019
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4 participants