title: Grouping county level data into states with R
body: <p>I'm attempting to learn R by using the John's Hopkins COVID-19 data located at: </p>
  
  <p><a href="https://github.com/CSSEGISandData/COVID-19/tree/master/csse_covid_19_data/csse_covid_19_time_series" rel="nofollow noreferrer">https://github.com/CSSEGISandData/COVID-19/tree/master/csse_covid_19_data/csse_covid_19_time_series</a></p>
  
  <p>I'm trying to work with the time_series_covid19_confirmed_US.csv file. The data is in a time series format with resolution down to county level. I'd like to work with state level totals for each day. I'm able to remove the columns of info I don't need, but get stuck trying to group the counties into states.</p>