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.
Full Answer. Although swelling is temporary, it can cause discomfort, especially during the summer. Doctor Tipster explains that swelling in the feet and ankles not accompanied by pain is known as peripheral edema. In hot conditions, this swelling is called heat edema and is caused by blood vessels dilating. The condition is worsened by sitting or standing for long periods, and it results in the legs retaining fluid. Peripheral edema is common, but it is also a serious health condition, according to Doctor Tipster.