You need to provide a reproducible example:
Like this:
westData <- tibble::tribble(
~Category, ~Order.Date, ~Speed,
"Stationary", "2010-05-06", 3,
"Supplies", "2011-05-06", 5,
"Technology", "2014-05-06", 3,
"Supplies", "2013-05-06", 2,
"Stationary", "2015-05-06", 1
)
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