For anyone whom it might help, currently I use the following
workaround:
I create as many columns as I need and pass 'undefined' values where
there is no data for a datetime stamp.
For example if I need 2 graphics, one for January 1 and January 2 and
the other one for February 1 and Feb. 2, I would add the following
data:
Jan 1, Graph_1_value_1, undefined,
Jan 2, Graph_1_value_2, undefined,
Feb 1, undefined, Graph_2_value_1,
Feb 2, undefined, Graph_2_value_2

The data should be ordered by date and time and... of course there is
much extra data passed. But at least it works! :)


On Jul 14, 11:59 am, Daniel Steinberg <[email protected]> wrote:
> Hello,
>
> First of all thanks a lot for the great tool!
> We would like to use Google Visualization API on our website and we
> even found that "Annotated Time Line" is something that is best for
> our needs. However there is a problem - we have 3 series of data that
> corresponds to 3 different regions, the data basically has to columns:
> datetime and a number. Whoever, the datetime part is rarely equal
> between the regions, i.e it could be:
> Region_1 June 6 1000
> Region_2 June7 2000
>
> But that means we can't use "Annotated Time Line" because it doesn't
> support multiple data sets with independent "x-value". A solution
> would be to use "Line charts" with chart_type=lxy, which "Lets you
> specify both x- and y-coordinates for each point, rather just the y
> values", but I wonder if it costs the effort, because our current tool
> does almost that and we really wanted to make use of the interactive
> features of Google Visualization.
>
> So basically my question is: is there any option like chart_type=lxy
> for "Annotated Time Line" or a similar chart, which would allow us to
> draw 3 independent graphs on one chart?
>
> Many thanks in advance!
> Daniel

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