This map displays the Explore PA Trails feature class from the Pennsylvania Spatial Data Access website. The feature class layer shows all of the trails in Pennsylvania. More information on each trail can be found at Explore Pennsylvania Trails, a website managed by the PA Department of Conservation and Natural Resources (DCNR). I used the UniqueValueRenderer to display the trails by their difficulty rating, and according to the feature class, the difficulty field lists a range of values from 0 to 3. Unfortunately, according to the DCNR trails website, the difficulty values of 0 and 1 in the feature class are both listed to be unknown difficulty. Trails with difficulty values of 2 and 3 are rated as easy and moderate respectively. Adjusting the render colors to match the difficulty levels from the website leaves most of the trails in the unknown category. This was an unfortunate discovery that made my resulting map far less colorful.
In addition to the examples from this lesson’s lecture, I also referred to the Visualize features by type sample code on Esri’s developer website. Following their example, I autocasted UniqueValueRenderer() and SimpleLineSymbol(). I was unable to find a way to easily display the difficulty categories of easy, moderate, and unknown in place of the integer values in the popup. I would have liked to have used conditional formatting to do this, but I couldn't figure out how to correctly implement this.