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Converts a vector of state names to an ISO 3166-2 two character state codes.
stateToCode(stateNames, countryCodes = NULL, dataset = "NaturalEarthAdm1")
A vector of ISO 3166-2 codes or NA.
Vector of state names to be converted.
Vector of ISO 3166-2 alpha-2 country codes the state might be found in.
Name of dataset containing state-level identifiers.
For this function to work, you must install and load the "NaturalEarthAdm1" dataset.
convertNaturalEarthAdm1
if (FALSE) { stateToCode("Washington") stateToCode("Barcelona") stateToCode("Shandong") }
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