When building maps that tell the story of their data you often come across scenarios where you would like the user to be able to compare two layers. The simplest method is just turning a layer on and off but if you’re looking for a more elegant solution then look no further than the new “Slide to Compare” template in Mango.
As you can see in the example below that shows the change in Cambodia’s forest cover between 1997 and 2006 a map slider is especially suited to maps where we would like to highlight the change between two datasets over a period of time.
The slider doesn’t only offer greater visual impact for the map user, it also allows the user to interact with the two layers and focus on particular areas of interest. If you would like to add this functionality to one of your maps simply select the “Slide to Compare” template from the template list in your maps administration panel.