Zero line can't be added (even in interactive tryout). Only works when zeroLine is set as center. In other cases is not appearing, unless you remove title from settings. Do you have a hint for this?
Yes, I can reproduce the problem: http://jsfiddle.net/5L5yz82n/
We will fix this for the next version.
This has been fixed for 1.13
Thanks, it is fixed. But is there a way to show 0 as a minimum value at the y axis (instead of setting minValue to negative)?
0
y
minValue
For the next version there will be a separate setting for that, currently the workaround is as you mentioned - set the minValue to a very small negative value like -1e-20 (http://jsfiddle.net/5L5yz82n/3/).
-1e-20