Map Scripting

One of my favorite features in Mapstraction, the open source library that lets you write map code once, is filtering. With the feature, you can add data to any marker, then filter based on that data later. In the book, my concert mashup example filters based on price, using data from the Upcoming API.

» Try out the Concerts Mashup

Because concert prices aren’t always simple (i.e., sliding scales of $5-10), there was a little server-side data slicing that had to happen. But the part where non-matching markers disappear quickly is all Mapstraction.

I cover it in-depth in the book, of course, but to get started now, view the source of this basic filtering example.