Defining More Features and Buffers

 Features can also be defined measured with other forms of tools and highlighted with buffers. The pairwise buffer tool is helpful in creating zoning areas that can be visually appreciated. Below is a map that has highlighted roads of a flight area at Purdue Wildlife Area.

The roads were manually configured using the draw polygon tool. That way, all roads can be accounted for with no error. The roads are still grass features, so the classification wizard querying did earlier would not be accurate, whereas the map above is.

Now, I added a 20m buffer from all roads highlighted on the map. This gives you a visualization of the land that is further than 20 meters from all roads. Due, to the road grid pattern being tight, the amount of land is quite small.

The buffer feature can also be used for other features. As seen below, I have put a buffer around mostly trees, but in total, all objects that exceed 10 meters in height.

Another form of analysis can be found when the same buffers above are placed on a map with a classification of previously found when using the classification wizard.

These maps have a classified object class (grass) and have an applied buffer. The buffer used for initially finding 20 meters from roads or 20 meters within objects with heights greater than 10 meters. Now, grass has been the classified feature to which the buffer has been applied to.

The buffer tool is extremely useful when calculating countless different locations for measurement and or construction. The tool can be paired with classified objects to understand how these buffers affect them.