After some issues with ArcGIS Online, I decided to re-think the Richmond Then and Now application. A while back, I stumbled upon Chris Whong‘s blog post about the Urban Scratchoff application he built using Leaflet.js and thought it would be a good candidate for the Richmond project. The application lets you explore two different maps (one current and one historical) by “Scratching off” one of the maps to show the other. This is similar to the “spy glass” concept in the original application, but with a little more flair and functionality.
The application lets you explore Richmond, Virginia in 1876, a decade after the end of the Civil War compared to present day Richmond. Wonderful details of buildings and their owners, parks and public buildings over-layed with a current aerial image of the city. Pan around and explore the city and use the “Scratch Off” button to see what has changed from 1867 to present day. Hit the swap button below to reverse the layers and the Pan & Zoom Map icon to move around and zoom.
If you are interested in the nitty gritty details of the application visit the about, Chris’s blog or fork the code on Github.
*Special thanks to Chris Whong for developing the code and sharing it with the world!