internal function to check and load input data to mapping functions

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Description

Internal function checking and loading dFs or sPDFs to mapCountryData, mapPolys, mapPies, mapBubbles, mapBars.

Usage

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rwmCheckAndLoadInput(inputData = "", inputNeeded = "sPDF",
  callingFunction = "")

Arguments

inputData

a dF, sPDF or "", for latter an internal example data is used

inputNeeded

"sPDF", "sPDF or dF", "dF"

callingFunction

optional : name of the calling function

Details

a rworldmap internal function, unlikely to be of use to users

Value

invisibly returns a dF or sPDF

Author(s)

andy south

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