I am going to calculate the area of agricultural land the lays in different UTM zones (36 and 37) by using different GPS collected data. I have GPS XY coordinates and I want to use these to draw a polygon. How?
You could convert all data to geographic coordinates to draw or create a custom System. Converting all the data to gcs wgs84 will help the drawing process but could cause problems on measuring. The Best solution is to convert to gcs wgs84 draw The polygon and convert back to utm for measuring.