This is an interactive web map that marks all the airports in the United States. The color of the airport icon indicates whether the airport has an air traffic control tower (ATCT). Red icon indicates that it has the ATCT and blue icon indicates that there is no ATCT. This map also divides the United States into each states and the color of each states indicates how many airports are there. Users can click on the airport icon to see each airport's name. The map can be accessed from here.
airports.geojson
contains all the airports in the United States. This data is converted from a shapefile, which was downloaded and unzipped from https://catalog.data.gov/dataset/usgs-small-scale-dataset-airports-of-the-united-states-201207-shapefile.us-states.geojson
is a geojson data file containing all the states' boundaries of the United States. This data is acquired from Mike Bostock of D3.
This map is created by Jou Ho, and is made with reference to a Web Map Design tutorial found here.