I did some prototyping of this using overlays. It is possible using
overlays, you can find the horizontal axis points and move a div to that
area.
chart_ctl02.getChartLayoutInterface().getBoundingBox('vAxis#0#gridline#0');
But this doesn't pass my usability test. I wouldn't want to have to do this
for all sorts of charts and all sorts of sizes.
On Monday, September 15, 2014 4:50:15 PM UTC-7, Andrew Gallant wrote:
>
> You can do something similar with domain-axis annotations, which allow you
> to create labelled vertical lines on your chart. They are not customizable
> to the extent that you are looking for, though (you can color them, but
> they will all have the same color; you cannot change the line width). They
> are also not available on ScatterCharts, but you can use them on
> LineCharts, which can be made to look nearly identical to ScatterCharts.
>
> On Monday, September 15, 2014 6:47:18 PM UTC-4, Julian King wrote:
>>
>> For many reasons, it would be very useful to be able to set a gridline
>> value. I imagine the value and the font and the color would need to be
>> setable. So an easy use case of this would be a scatter-chart to show a
>> scale of grades on an exam over time, in the background of the chart one
>> would want to show a line at 59 representing Failing, another bold gridline
>> at 69 representing below average, and so on and so forth.
>>
>
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