Fix scattergl hover over nulls #4213
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... so that we don't mutate pointData.cd and propagate 'fake'
`gd.calcdata[i][j]` to subsequent _module.hoverPoints calls.
- post #3578 all scattergl traces either set a `tree` or and `ids` array during the calc step.
archmoj
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Sep 23, 2019
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@etpinard thanks very much for the PR. |
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fixes #4212 - a bug introduced in 1.45.0 as a side-effect of #3578
before: https://codepen.io/etpinard/pen/LYPqWYZ (hover over
x=3and check console)after: https://codepen.io/etpinard/pen/YzKBNbp?editors=1010
In
scatter/hover.js, we used to mutatepointData.cdin order to getscattergltraces to work with the parts ofFx.hoverthat expectgd.calcdata[i]to havelength=trace._length(which isn't the case forscattergl). Before #3578, we used to return early hereplotly.js/src/traces/scattergl/hover.js
Line 48 in 184c0b0
and the wrong
pointData.cdmutation did not occur.cc @archmoj