Tooltip showing data for wrong "column"

[triciajam]

Hi,

This may relate to issue #325, not sure.
When loading data using the "columns:" method, under certain conditions I see that the tooltip data is associated with a different column than the one I am hovering over.

Here is a simple fiddle of my issue (which I believe uses latest version of c3): http://jsfiddle.net/uu2Wr/2/
In this case, the tooltip data for 'area1' is shown for 2000-2002 instead of for the actual data years 2004-2006.

Great work on this library, it is much appreciated.
Let me know if I've got something wrong.
thank you,
Trish

[masayuki0812]

Hi, Thank you for reporting. I think the cause would be undefined in loading data. c3 cannot accept undefined as data and please use null as empty data point. Then, this issue seems not happen.
And currently c3 report an error about invalid data, so we can notice that undefined is not acceptable.

[triciajam]

Thank you much - undefined was indeed my issue (I should have spotted that!) and in any case I am now using the latest version which makes it obvious. thanks, tj