If this is my command to plot a map of Europe:
eps_europe <- mapCountryData(n, nameColumnToPlot="eps_score", mapTitle="EPS Score - Europe",colourPalette=colourPalette,
catMethod="fixedWidth", missingCountryCol = "white", mapRegion="Europe", addLegend=FALSE)
Instead of adding numeric based legend, I would like to add a two-headed arrow with some text. I would be grateful for any help. Thank you!
Sincerely,
Shouro