| 
           country_centroids  
         | 
        The Centroid Coordinate of Countries in The World  | 
      
        
        | 
           cumulative_indicator()  
         | 
        A Function to Simplify the Cumulative Cases Visualization Code  | 
      
        
        | 
           daily_indicator()  
         | 
        A Function to Simplify the Daily Cases Visualization Code  | 
      
        
        | 
           getlink()  
         | 
        A Simpler Way To Create Hyperlink Text in Shiny App  | 
      
        
        | 
           getplot()  
         | 
        Create A Line Interactive Plot of COVID-19 Variables by Date and Country  | 
      
        
        | 
           getref()  
         | 
        Create A Reference List in Shiny App  | 
      
        
        | 
           launch_app()  
         | 
        Explore COVID-19 Related Variables Interactively  | 
      
        
        | 
           testing_weekly_eu  
         | 
        Weekly Europe's COVID-19 Testing and Positivity Rates  | 
      
        
        | 
           transmission_subnational_level  
         | 
        Weekly COVID-19 Dominant Source of Transmission in Europe by Subnational Level  | 
      
        
        | 
           ui_selectize()  
         | 
        Refactor User Interface selectizeInput Function  |