That would be great. But I know you have a lot things on your to do list.

Regards,
Nick

On Thu, Sep 1, 2016 at 6:00 PM, 'Daniel LaLiberte' via Google Visualization
API <google-visualization-api@googlegroups.com> wrote:

> The undocumented generateTooltip option (which you could use with a
> showTooltip function) is only available for the Treemap so far, but it
> would be a good idea to support something similar elsewhere.
>
> On Thu, Sep 1, 2016 at 11:30 AM, Nick Dunbar <dunbar.n...@gmail.com>
> wrote:
>
>> Hi Dan,
>>
>> Thanks for getting back to me.
>>
>> Do you think I could do it using a showFullTooltip() function, in the
>> same way that can be done in Treemaps?
>>
>> The trouble with the Overlay approach is that I have to create DIV
>> classes for the elements, and I already have a page with a lot of
>> containers carefully balanced together which I would prefer to leave
>> untouched.
>>
>> Regards,
>> Nick
>>
>> On Thu, Sep 1, 2016 at 4:09 PM, 'Daniel LaLiberte' via Google
>> Visualization API <google-visualization-api@googlegroups.com> wrote:
>>
>>> There is no direct support for such a display, but you could probably
>>> create it with sufficient hacking.  Here are a couple hints if you want to
>>> pursue it.  You'll have to create your own html overlay at the right
>>> position based on where the mouse is (and thus the crosshair would be). You
>>> would need access to the corresponding total value, which you could look up
>>> in your original data table.
>>>
>>> On Thu, Sep 1, 2016 at 11:03 AM, <dunbar.n...@gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I am using a line chart with multiple series, and am using the last
>>>> column of the dataTable to store the totals at each time point. I use a
>>>> dataView to stop the totals column from displaying with the rest of the
>>>> data.
>>>>
>>>> What I would like is to show the total for each time point in the
>>>> tooltip, at the top of the panel of values that you get with the chart
>>>> option focusTarget: "category", crosshair: { trigger: "focus" }
>>>>
>>>> How do I go about doing this?
>>>>
>>>> All help appreciated.
>>>>
>>>> Nick
>>>>
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>>>
>>>
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