So, interactive graphs are a great way to use googleVis,
because the mapping stuff is hard, but Google's done a lot of it for you already.
So, if you want to create JavaScript maps that have little pop ups over
the countries that you specify, and
have it nice so that you can embed it in a webpage or a Slidify presentation, or
a presentation or a document or so on, it's not so bad.
So, here's an example right here.
You can see in our R markdown presentation,
it actually does the interactivity.
Okay.
And, of course, you can zoom in if you want, and do things like this, so
that this is just specifying the options.
Now, while we're on the topic of options, there's a million different options.
I give you the link down here to show you where the options occur,
what page, that you can pass as arguments to your googleVis chart.
So, how that works is just as an options command, as a list.
You need to name them right, and give them the right value.
And then, you need to use this syntax that is, I guess it's just JSON syntax.
But as long as you can, but you probably don't need to know any JSON.
You just actually need to kind of look at it once or twice, and get used to it.
And then I think it should be no problem.
Okay, so here's an example of just doing a line chart.
And the last thing I want to
talk about is the idea that you can just merge multiple plots together.
So, that's just using gvisMerge.
And then, here is an example.