Module 4 - Vector Analysis

 

A map portraying potential campsites at Desoto National
 Forest that are within designated distances of
roads (300m), rivers (150 m), and lakes (500 m).
Additional depiction of Desoto National Forest
in relation to the state of Mississippi.

This week's ArcGIS journey lead us through the process of analysis. This began with depicting the 7 steps of the GIS analytical process and emphasizing that is a fluid process where steps may be revisited or redrawn at any time. 

We observed why geodatabases are the preferred file structure to store, manipulate and query spatial data. Furthermore, we were introduced to spatial and attribute queries that would allow us to pinpoint specific features classes in our data that would allow for more exact analysis. 

Additionally, we got hands on with the different types of overlay tools that are essential for data analysis. Amongst these two were the union and erase tools which were essential to creating the map depicted above. 

Lastly, we explored the world of buffers which are of utmost importance when one wants to denote setbacks from specific features. One can further overlay these buffer zones when desiring to pinpoint areas that overlap for a specific purpose, i.e. finding the perfect campsite!

All in all, this week's lab was a challenging one; trial and error became a good friend. However, it was helpful in solidifying recall of where tools are found, how to reach them, and how to correct processing mistakes if they occur. 

Ultimately, this lab showed a glimpse of the myriads of ways one can manipulate and work with GIS data.