Saturday, November 19, 2016

Downloading GIS Data: Lab 2


The goal of this GIS assignment was to learn how to download data from the internet to use in ArcMap. To begin this GIS assignment, I went to the census website and used their fact finder option and an advanced search. Then I completed searches for the necessary data. The data downloaded was the “Population Total” files, with the geography “All Counties within Wisconsin”. After adding the excel files to my folder, I then went back to the fact finder page and downloaded the shapefiles of Wisconsin. After downloading the necessary data, it is important to remember to unzip the downloaded data files in order to be able to see and use them. Once all of the data was unzipped and added to my folder, the next step was to open up a blank map in ArcMap. To begin, the files that were just downloaded into my folder were then placed into ArcMap on my blank map. I completed a join for the shapefile table and the excel table that I had previously downloaded. Next, I created a new layer in ArcMap, and then proceeded to choose my own data, which was “Housing Units” to download and then project in ArcMap. After I downloaded this data into my folder, the next step was to create a graduated color map, which is the same map type as my previous map with population data as well.

With these two graduated color maps, I then created a cartographically pleasing representation of the population and housing data that was downloaded of Wisconsin from the census fact finder website. In order to make a cartographically pleasing map, all of the necessary elements needed to be added to my maps. This included a north arrow, a scale bar, my name, a title, the date, and legends for each map. After completing this part of the lab, the next step was to create a web map with ArcGIS online. To do this, the “Housing Units” layer was removed so that “Population” was the only map layer. I then used ArcMap to sign into my ArcGIS account and then transport my map into a service.

The resulting maps that were created included two density maps of Wisconsin and my service map on ArcGIS online. Both of my maps had the pattern of higher (darker) values in the Southeast part of Wisconsin. The source of the data that was used in my maps is census.gov (Fact Finder). My completed map is shown below.