I'm trying to delineate all river basins on a global 1/16 degree grid. The algorithm that the Basin tool in the Spatial Analyst Toolbox works well (fast) except it doesn't know how to handle the International Dateline (-180/180 degree line). See example image below...
It is important that I process the entire globe at once because I need each basin to have a unique identifier. Can anyone suggest a way of doing this? I'd be open to modifying the Basin tool script if necessary and if I can get my hands on it.
I'm using ArcInfo 10.0 and all standard python tools.