Steps to replicate the issue (include links if applicable):
- Load https://commons.wikimedia.org/wiki/Data:ADFC_Member_Count.chart
- Hover with the mouse over one of the “gaps” in the data
What happens?:
It displays “Member Count: NaN”
What should have happened instead?:
Something that doesn’t require a user to know about IEEE 754 to make sense of.
- “no data”?
- custom / localizable string?
- no tooltip at all?
Other information (browser name/version, screenshots, etc.):
In the underlying tabular data, the years that display NaN have the data set to null. I expect it’s set that way, rather than completely omitting the years with no data, so that the chart won’t show non-adjacent years directly adjacent to each other (but that’s just my guess and I haven’t tested how it would behave otherwise).