This appears to be due to two issues: the 0 value on the vertical axis is
not shown, and the chart area is not being clipped properly.  You can force
the 0 value to be included by adding a baseline option: vAxis: { baseline:
0 }, or by adding vAxis: { viewWindow: { min: 0 } }.  This is probably what
you should do since you are using a column chart.  The main reason we don't
do that by default is backward compatibility.

The clipping problem has been fixed in a recent version.  Try using the
frozen v43:
https://google-developers.appspot.com/chart/interactive/docs/library_loading_enhancements#frozen-versions



On Mon, Oct 26, 2015 at 7:37 AM, Jin Xie <[email protected]> wrote:

> Hi, I'm experiencing problem with column chart cross x-axis line, as shown
> in the attached image
> it is always like this for some certain dataset. I've compared these
> different dataset, and found no obvious problem with them.
>
> Any one know what may has cause this problem
>
>
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-- 
Daniel LaLiberte <https://plus.google.com/100631381223468223275?prsrc=2>  -
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[email protected] <[email protected]>   5CC, Cambridge MA
[email protected] <[email protected]> 9 Juniper Ridge
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