For the sake of future users, it is best to treat numerical variables which are essentially categorical as character variables in order to preclude awkward barplots, pie charts, ... Hence, the PROC format step should look like this: PROC FORMAT;
VALUE $typefmt '1' = 'small Delhaize'
'2' = 'grand Delhaize';
VALUE $provincefmt '1' = 'big Delhaize'
'2' = 'Liège';
RUN;
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