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.
But there are cases when swollen legs, ankles and feet need attention from a doctor. Here are common causes of swelling and what you can do to treat it. Causes of and Treatment for Swollen Legs Cause: Venous Insufficiency. When all is well with a personâs veins, the blood is able to pump upwards to the heart. In some cases, swollen ankles, legs and feet can be a sign that the blood is not able to fully pump back up the veins. Known as venous insufficiency, the condition occurs when the valves in the veins are damaged and canât keep blood from leaking back down.