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Fix tooltip not shown for missing dataset-value #2789

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awallat
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@awallat awallat commented Jun 16, 2016

When two datasets are shown and one does not have all y-values, because they represent some gaps for example, then the position of the tooltip is not calculated correctly, when using mode 'label' or 'dataset'. For those gaps the y-value is set to 'null', which leads to a problem when calculating the tooltip position. This fix checks if the position of every dataset exists, before it is used.

The problem can be seen in this jsbin:
http://jsbin.com/nefasokosi/edit?html,output

@etimberg
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+1 to merge

@fulldecent
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+1

@fulldecent
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@awallat please rebase so we can merge

When two datasets are shown and they don't have the same x-coordinates, then the position of the tooltip is not calculated correctly, when using mode 'label' or 'dataset'. This fix checks if the position of every dataset exists, before it is used.
@awallat awallat force-pushed the awallat-patch-tooltip-multiple-datasets branch from 79ca9ba to 72f423f Compare June 28, 2016 07:47
@awallat
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awallat commented Jun 28, 2016

I updated my branch and it's free of conflicts now.

@etimberg
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Thanks @awallpat

@etimberg etimberg merged commit 1ee8cb5 into chartjs:master Jun 28, 2016
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3 participants