Skydiving Cincinnati and the Tri-State Area since 1969. Welcome to Skydive Warren County, the Tri-State's oldest United States Parachute Association dropzone. Our family owned and operated dropzone has been providing first-class skydiving in Ohio since 1969.
ArcGIS is a geographic information system (GIS) for working with maps and geographic information.
Define Projection Tool. âDefine Projectionâ in ArcGIS is what you use when the data has no defined coordinate system. The ArcGIS error message would look like: âUnknown Spatial Referenceâ. When you run the âDefine Projectionâ tool, the tool does not change the projection. It only changes the metadata describing the current projection of the dataset. FYI: The metadata that this tool creates is a .prj, .tfw, .aux within your existing dataset.