contour_dem Contour DEM Extracts contours from DEM smooth true data levels -2.00 -1.75 -1.5 -1.25 -1 -0.75 -0.5 -0.25 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 rule1 Contour Line #000000 1 Arial Normal 10 2 #FFFFFF 0.6 #000000 2000 true 100 50 30