Since the link is not working, I am also including a screenshot of the MapBox version of my map of Duval County/Jacksonville food deserts.
The tiling process was the easiest part of this lab and made the most sense. It is easy to add layers and edit them however is desired. In the realm of mapping this is quite useful in that changes can be very specific and are easily reversed or further edited. It is also helpful in that working with different extents becomes easier as the programs adjust for the user and editing is very streamline. The following are food for thought responses presented during this lab assignment. My data is for Duval County Florida which is home to my chosen city of Jacksonville. I used the USGS and census bureau websites to obtain data for Duval County including the parcels and outline. I used the US Dept. of Agriculture website to obtain the food desert shapefile. This data was created by using a selection by attribute tool and specifying areas that classify as food deserts. To be classified as a food desert, the USDA states “at least 500 people and/or at least 33% of the census tract’s population must reside more than one mile from a supermarket or large grocery store within an urban area and more than 10 miles for rural settings.” Using these parameters and the selection by attribute tool, areas of “food desert” were selected and sent to a shapefile that could be used across different applications. Given my source is the USDA I believe the quality/credibility of my data is good. The data shows that there are several food deserts within Duval county which did surprise me given that Jacksonville, FL lies at the heart of the county and is a sprawling urban area. I would have expected better access to grocery stores in this entire area being urban and progressive city. The trend is, not surprisingly, that the food deserts occur in the areas surrounding Jacksonville, particularly to the Northwest. Here, I was surprised by how close the food desert is to downtown Jacksonville. The data shows the location of grocery stores and the food desert designation shows the time investment required to obtain fresh, healthy food.
I had far too many technical difficulties to say I enjoyed the lab this week but I did benefit from the tiling section and further use of online mapping applications.