[R] Subset error on atomic vectors why?

[jcrosbie]

I'm getting this error: "Error in MOPrice$Date : $ operator is invalid for
atomic vectors"

The cost is: subset(MOPrice,
as.Date(MOPrice$Date,"%Y-%m-%d")==as.Date("2013-11-28","%Y-%m-%d")) 

The date column looks like:
"2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31" "2013-12-31"







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