Tuesday, March 7, 2017

Terrain Visualization

Terrain visualization is an important skill to have when working with GIS data. It helps to know how to convert a two-dimensional image into something that appears three-dimensional.
For this week, we were tasked with taking a land cover assessment of various tree species in Yellowstone national park and along with a Digital Elevation Model (DEM), make a map that showed the land cover as well as showing the terrain features. My product for this task is above. I first made sure that the land cover data was easy to read and made sense. I updated the color scale to group the different assessments for the tree species together with varying shades of color. I also made sure that the non-forested areas were an easy to identify color (white) and that water features were blue. I then used the DEM to create a hill-shade layer. The land cover data was place over the hill-shade as an overlay and made semi-transparent. This made it so that the hillshade showed through and the colors of the land cover were correctly represented on the legend. 

This map in the end, clearly shows both sets of data in a clear and concise way. Both datasets work well together and neither one out-competes the other for attention.

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