Open Street Maps
Brief Description
Open Street Map is an open data source where people can edit the map of the world. The map contains roads, trails, cafes, railroads, parks, schools, and more.
Source
City data from ACS 5-year report, 2022
Park Area
Measure Description
The land designated to parks in a city. To get the city area we had to use the sf package in r to find the area of the polygon geometries of the parks.
Measure Calculation
Final_Parks_City_intersection$park_area <-
st_area(st_geometry(Final_Parks_City_intersection))City Area
Measure Description
The land designated to the cities in Iowa. We got the polygon geometry for the cities from the Tiger/line Shapefile, choosing 2023 Iowa Places. We then used the sf package in r to find the area of the polygon geometries of the cities.
Measure Calculation
shape$city_area <- st_area(st_geometry(shape))Park City Proportion
Measure Description
The park area as a proportion of the total city area.
Measure Calculation
\[ \text{Park City Proportion} = \frac{\text{park area}}{\text{city area}} \]
Num Parks Per 10K
Measure Description
The number of parks in a city per 10,000 people.
Measure Calculation
\[ \text{Num Parks Per 10K} = \frac{\text{number of parks in a city}}{\text{Population}}\times 10000 \]