Geographic dynamics refers to the development of processes that shape our environment. While geographic dynamics is central to geographic understanding, the current GIS technology is incapable of capturing information that reflects the working of geographic processes, such as spread of a wildfire, development of a weather system, and propagation of a disease. Inability to represent geographic d...

A recent econometric literature has critiqued the use of regression discontinuities where administrative borders serve as ‘cutoff’. Identification in this context is difficult since multiple treatments can change at cut-off and individuals easily sort on either side border. This note extends difference-in-discontinuities framework discussed Grembi et al. (2016) to a geographic setting. paper fo...