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INTRO: This Shiny application takes a look at different power plants across the United States from 2000, 2010, and 2018. The main type of visualization in this application is leaflet maps and I also use checkboxes, dropdown menus, and sliders to alter the visualizations. There is a map of the Illinois power plants in 2018, a "split screen" which allows you to compare any 50 states from 2000, 2010, and 2018, and lastly a map that shows the entire US from those same 3 years.
To access each of these visualizations, you can use the sidebar menu on the left. The Illinois Map option shows the leaflet map of the Illinois power plants in 2018. The State Comparisons option shows the split screen of the 2 maps, and the US Comparisons option shows the US map.
Sidebar menu
Each of the visualizations have their own checkboxes to filter out which energy sources are shown in the map. For the split screen, there is a certain checkbox group where you can filter out certain energy sources for both graphs instead of one. However, there are still checkboxes for the individual graphs if you so desire.
Checkboxes for the Illinois 2018 map
Checkboxes for the split screen part
Checkboxes for the US map
The split screen option utilizes the dropdown menus on the left hand side of the application. There are 2 dropdowns for the specific years and 2 more dropdowns for the states being shown. The first year option and first state option (first and third dropdowns) correspond to the first map and the second options (second and fourth dropdowns) correspond to the second map.
Dropdown menus
For the US map, it only uses the first dropdown menu since there is only one map and all of the states are being shown on the map. The US map also utilizes two sliders which allow you to filter the map to a specific range of the different generation capacities of energy sources.
Sliders (located on the bottom)
For a demo of the application, here is a YouTube video: https://youtu.be/xRYWyY-kBog
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