[R] non-numerical values as input using nnet

[Raji]

Thanks Łukasz.My dataset has 5 columns in which first 3 are numerical , the
4th is a name and 5th is a number(sales).I am trying to use nnet to predict
the sales based on the other 4 parameters.The nnet takes each name value as
an input. How does nnet take the name value as?
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