I want to use append_data
(tmaptools package), but appears a message that show:
"This function is deprecated and has been migrated to github.com/mtennekes/oldtmaptoolsError in append_data(World, wbData4, key.shp = "iso_a3", key.data = "iso3c", : Data contains duplicated keys: NA. Set ignore.duplicates=TRUE to ignore duplicates in data."
Is there any other function in tmaptools package (or in other package in CRAN) that replace that function?
Thanks!!