Removing non-ASCII characters from data files

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These days, a slightly better approach is to use the stringi package which provides a function for general unicode conversion. This allows you to preserve the original text as much as possible:

x <- c("Ekstr\u00f8m", "J\u00f6reskog", "bi\u00dfchen Z\u00fcrcher")
x
#> [1] "Ekstrøm"         "Jöreskog"        "bißchen Zürcher"

stringi::stri_trans_general(x, "latin-ascii")
#> [1] "Ekstrom"          "Joreskog"         "bisschen Zurcher"

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