Marshall Kirchner's UWF GIS Blog

Comparison of Crime Analysis Methods This week's laboratory assignment involved mapping and analyzing crime data for the Washington DC and Chicago metropolitan areas. Utilizing the various methods available to showcase this data was  enlightening and demonstrated the importance of selecting the most suitable method for a particular analysis. Noting the differences between the methods and what this could mean for cities is vital in their understanding. A simple dot map of crime locations is not very meaningful on its own, but aggregating the data and enhancing it through the abundance of tools in ArcGIS Pro allows for more meaningful analyses to be made. Looking at the maps produced through the various methods in the lab, one may notice particular trends within the Chicago metropolitan area and which areas are more prone to crime. The Chicago crime hotspot map that appears best for predicting future homicides would likely be the Grid Overlay. This is because the crime density was hi...

This week, I completed four exercises under the ESRI course 'Get Started with Visibility Analysis.' These four exercises were: Introduction to 3D Visualization, Performing Line of Sight Analysis, Performing Viewshed Analysis in ArcGIS Pro, and Sharing 3D Content Using Scene Layer Packages. These exercises were completed in lieu of a form lab assignment, but nonetheless offered critical skills and practice in an important topic in GIS capabilities. I took a great deal away from this week's assignment and inherently will utilize what I learned in future assignments and projects. I am excited to share what I have learned throughout this course and my overall takeaways of the assignment. Working through these courses, completing the exercises, and taking the quizzes helped in solidifying my understanding of visibility analysis and 3D imagery. The strong focus on ArcGIS Pro and its capabilities was elemental in mastering this fairly new craft. I believe it is truly incredible ho...

  LiDAR Analysis of Shenandoah National Park Forest This second laboratory assignment of the course involved the use of LiDAR data from the United States Geological Survey and altering it to create meaningful data for foresters. The data produced in this lab is useful because it can aid in determining overall forest health. Knowledge is critical in managing forests, and knowing where trees lie within the park, areas where there is old vs. new growth, and tree density patterns is of the utmost important in determining best management methods. Forest management methods are complex and require forest data to determine best practices. It is unique in this instance, as one does not have to go out in the field or even be near the forest to learn quite a bit  about it. Ultimately, foresters can use this data  to determine where they should plant more trees, where controlled burns should take place, and areas that should be protected.  Initially, I had to process the .las fi...

  Corridor Analysis Map for Black Bear Movement in Coronado National Forest Scenario 4 of this module required making a least cost path / corridor analysis that would highlight areas in which Black Bears would likely travel between Coronado National Forest in Arizona. This analysis was very self-directed and I was able to utilize all of the skills and concepts acquired throughout the module. The corridor analysis is very useful in real-world settings, and can be used in a variety of fields and applications. This particular example of Black Bear corridors would be useful in Wildlife Monitoring and Infrastructure / Environmental Planning. It is important to consider a multitude of factors when running a analysis such as this one. The factors I took into account were the elevation, land cover type, and distance from roadways. Other potential spatial elements that could be considered fo future analyses would be food availability, distance to water sources, and distance to civiliza...

  Map Layout Comparing Two Weighted Overlay Methods The second scenario of this module's laboratory assignment was based around us helping a property developer determine if a parcel of land is worth buying. Essentially, I was to use a multitude of land factors to determine which parts of the land would and would not be suitable for development. For example, those with lower slopes, closer to roadways, and with adequate soil are more suitable for development. I used a variety of ArcGIS Pro tools in this analysis, including the Polygon to Raster, Euclidean Distance, Slope, Reclassify, and Weighted Overlay tools. Steps Taken in Completing the Suitability Analysis First, I decided to reclassify the raw data to assign different factors of the data suitability levels. This was essential in having each raster containing the same value scale. I ran the Euclidean Distance tool on both the rivers and roads shapefiles to have a distance output that would be used in this reclassifying process....

My name is Marshall and I am pursuing my Masters in GIS Administration here at UWF. I also currently work full-time as a Clinical Pharmacy Technician for a Pharmacy Benefits Management company.  However, my background and true passion lies in the Environmental Sciences. I am very passionate about our natural world and believe GIS is an amazing tool in understanding and protecting it. Thus, I decided to apply to and enroll in UWF's stellar GIS program, because of its comprehensive curriculum and flexible learning environment. I am excited to be enrolled in another fascinating course and to learn more about a field that is going to make such a great impact on our world. Upon attaining my graduate degree, I hope to gain employment within an organization that utilizes GIS mapping to highlight, analyze, and solve environmental issues. More about me: I absolutely love spending my time outdoors whenever and wherever. Hiking kayaking, you name it. I also grew up in a suburb of Chicago and ...