Ordinal categorical data with GLM

Hello Dear R List:

Is there an easy way (one line command, or at least without "for") to
make a
categorization of a continuos variable that I have in a vector, say "x",
and the
limits of the categories in other vector, say "y". The vector "x" is
10000 length
and the "y" vector is 101 length for 100 categories, where rank of "x"
is narrow
or at least the same than the rank of "y".

Thank you for your ideas.

Kenneth

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