Unfolding is a library to create interactive maps and geo visualizations in Processing and Java. In this article, we will discuss what are the features of unfolding and how it is used to create interactive maps in Java and Processing.
The main purpose of using unfolding is to create not only static maps but also interactive maps in both java and processing. It can easily be installed on eclipse by downloading the unfolding template from the official website. It is widely used due to the features provided by unfolding like:
- Interaction Events: In unfolding, we can easily create interactive maps. The basic interactions like zoom and pan are included in this library. Apart from these, more advanced features like overview, details or multitouch gestures can also be easily added to the maps.
- Data Visualization: This library is very robust that it even lets users create geo-positioned markers to display the data on a map. This visual style can be freely adapted. This library also supports users to load and display user-defined shapes like points, lines or polygons.
- Styled Maps: This library is a title-based map library. This library allows map titles to have various geographic features and styles. It also comes with map providers like OpenStreetMap or TileMill.
- Clean & Extendable Code: This library allows the beginners to easily create simple maps. Advanced users can also sketch their prototypes or create their own sophisticated visualizations.
In this implementation, let’s consider to draw two maps, one is Delhi and the other is Mumbai using this library. The map created is interactive as we can zoom in and zoom out. We need to set up our maps using the latitude and the longitude of the place. The draw function in the program runs repeatedly and draws the map repeatedly on the canvas.
Below is the implementation of the above approach:
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