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259841
2006 Jan 30
3
Date Not Staying in Date Format
I have a column in a data frame that has a class of "Date" and a mode of
"numeric". When I:
max(df$Date)
My output stays in Date format, i.e. "2006-01-03".
However, when I run the following statment:
tapply(df$Date, df$SomeFactor, max)
my output looks like this: 9129 9493 9861 10226 10591 10956 11320
11687 12052 12417
The returned object is of