# Slope analysis gis

A flat surface is 0 percent, a 45 degree surface is 100 percent, and as the surface becomes more vertical, the percent rise becomes increasingly larger. The user will also learn the basics surrounding the creation of slope, hillshade and aspect maps. Given two points ( x 1, y 1) and ( x 2, y 2) on a line, the slope m of the line isThrough differential calculus, one can calculate the slope of the line to a curve at a point.The concept of slope applies directly to grades or gradients in geography and civil engineering.

Digital Elevation Models (DEMs) are particularly useful in thisregard. In this lesson you will use terrain analysis tools to find out moreabout the study area for the proposed residential development from earlier.The goal for this lesson: To use terrain analysis tools to derive moreinformation about the terrain. To get a better look at the terrain, it is possible to calculate ahillshade, which is a raster that maps the terrain using light and shadow tocreate a 3D-looking image.To work with DEMs.