ArcMap is run using primarily Shape Files and in more recent versions Geodatabases can be used to store larger sets of data. These file formats are what are uploaded into the program to view spatial data.
Edema is swelling of both legs from a buildup of extra fluid. Prolonged standing or sitting, especially in hot weather, can cause excess fluid to accumulate in the feet, ankles and lower legs. Tiny valves inside the veins of the legs can become weakened, causing a common problem called venous insufficiency.
How to Reduce Swollen Legs & Feet. Leg and ankle swelling can cause discomfort. Lower leg and foot swelling is known as peripheral edema. While this condition is not painful, it can be uncomfortable and swelling may make it difficult to put on socks or shoes for them to fit properly.