Hello!
I'm looking for guidance on how to create a google annotation chart where I
can add lines dynamically. Specifically, I have the following webpage
(which you should be able to open in a text editor or a web browser) which
contains just one google annotation chart (this is derived from a larger
website, but the rest of the page isn't important, so I've isolated just
the chart so that you can compile it and see what's happening).
At the moment, the chart pulls from a google doc that contains exactly one
series.
I want to add more series to this chart, but I don't want them to always be
displayed. Specifically, the current line is plotting a global series, and
I want to have maybe 20 country-specific series. I would want to make a
button for each country, and then the person viewing the page would start
by seeing just the global series, but could simply click the buttons and
have the country-specific series overlay the global series in a different
color (they could add as many as they want). How can I do this? Do I put
the other series in the same google doc? How can I make them only be
displayed conditional on the pressing of a button? Any explicit code
alterations would be appreciated, as well as any general suggestions about
how to handle conditional series with google annotation charts (or any
other advice about other ways to approach this problem).
Thank you for your help,
Joshua
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