This is the code for an R Shiny app showing maps and histograms of the cost of food nationwide. Play with the (mildly) interactive maps at http://garretchristensen.shinyapps.io/Food_Price_Maps.
Code written by Garret Christensen for research with Hilary Hoynes and Erin Bronchetti. Data comes from the USDA's Quarterly Food at Home Price Database.