The Timeline extension to Exhibit behaves as if there's only one event
source.  The custom constructor is called with:

this._timeline = settings.timelineConstructor(timelineDiv,
this._eventSource);

I'm not sure it suits your use case as-is.  You may want to see if there
other Timeline solutions that also fit your goal of easier data
maintenance, or, if you have the inclination, you could write up a
Timeline importer for JSONP / Google Spreadsheets.  The Exhibit JSONP
importer code may be useful for that approach.

On 2012-01-19 16:01 , Amordad Yar wrote:
> I'm quite new to using exhibit and timeline. I've played with the
> examples I've found and was feeling comfortable enough to start my own
> project but once I identified that project, I ran into a stumbling
> block quickly. The time line examples show me how to easily use two
> datasources side by side - which is what I need.....BUT editing the
> file was a pain so I was overjoyed to see examples of exhibit/timeline
> using a google spreadsheet.
> 
>  I could find no example of using timeline alone with a google
> spreadsheet but could also see incentive to make the exhibit/timeline
> switch. That is perfect BUT all the examples for exhibit/timelin I've
> found so far use only one datasource and I'm finding the documentation
> for exhibit and timeline very...difficult to find to see if what I'm
> trying to do is even option.
> 
> Using the following to identify one eventSource, I'm clueless about
> how to identify a second one to be used with an additional
> timelineConstructor ( which is what I'm assuming I need to do for each
> additional timeline)
> 
> <link
>       rel="exhibit/data"
>       type="application/jsonp"
>       href="https://spreadsheets.google.com/feeds/list/
> 0AhKn5jZugw4YdEwwTVhHSXNjUmVvT1B6UVpZSVhzWUE/od6/public/basic?alt=json-
> in-script"
>       ex:converter="googleSpreadsheets" />
> 
> 
> Any pointers would be greatly appreciated.
> 

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