Special Topics: Lab 7

The lab for this week compared TIN models with DEM models.  The TIN model shows the terrain and lake with fairly rigid lines. The DEM model shows the changes in elevation with far smoother contour lines.  The TIN didn't really show the terrain well, so I had to adjust the TIN by using the Edit TIN tool.

It is interesting that DEMs and TINs can be created from elevation points.  DEM models are represented by rasters while TINs are represented by vectors.  Since DEMs use pixels, the the changes in elevation seem smooth.  Creating a DEM with slope, aspect, and elevation was also different than using triangulated elevation points.

Modified TIN