In this lab session, the goal was to become familiar with raster data and how to use it. The raster data we chose to focus on was a Digital Elevation Model (DEM). We made four maps using this data: an aspect map, a slope map, a shaded relief map, and a 3D map.
Elevation models are a great tool that allow people to present data in a realistic manner. It is an excellent way for people to be able to understand how elevation is changing in an area. It is much easier to use than a topographic map, for example. It is also more aesthetically appealing. The 3D map is very cool and interesting to play with. The virtual 3D effect is done well enough to not just be a visual gimmick, but is actually accurate and useful. When used in conjunction with the other maps I have posted here, it becomes very easy for the user to visualize what the mapped area actually looks like. However, one must exercise caution because it can be very disorienting. It is very easy to lose your bearings while looking at the 3D map. The way I have presented the 3D map below, it is as if the viewer is looking towards the south from the north.
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