mercelsantos

# Create a simple data frame for testing
df <- data.frame(POSIXtime = seq(as.POSIXct('2013-08-02 12:00'),
                             as.POSIXct('2013-08-06 05:00'), len = 45),
                 x = seq(45))

# The Subset Examples
#
# All data on 2013-08-06
sub.1 <- subset(df, format(POSIXtime,'%d')=='06')