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tp3024592p3024592
2010 Nov 02
1
class changed after execution with sqldf
When I run sqldf to merge two datasets, it's changing the Date (class date)
to a numeric value (class factor). Not sure why. Appreciate any insight.
Console output for two datasets and the merged dataset (via sqldf) listed
below.
> summary(df.aggregate)
Date Hour x
Min. :2010-07-01 0 : 64 Min. : 0.00
1st Qu.:2010-07-25 1 :