Hello R users
I have a dataset that has different types of records with different
dates and times pertaining to each.  I would like to have a bar graph of
a count of the types(ie. The number of types) of recods by hour grouped
by year.  So the count of the types would be the y axis, the hour on the
x axis and then grouped by year for easy comparison.  I think that I
have to use barchart however I don't know how to get barchart to do a
count and not graph values.
Thanks

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