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anirudhjayaraman/verbs08.r

Created December 18, 2015 12:46
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verbs08.r
# Definition of dtc
dtc <- filter(hflights, Cancelled == 1, !is.na(DepDelay))
# Arrange dtc by departure delays
arrange(dtc, DepDelay)
# Arrange dtc so that cancellation reasons are grouped
arrange(dtc, CancellationCode)
# Arrange dtc according to carrier and departure delays
arrange(dtc, UniqueCarrier, DepDelay)
# Arrange according to carrier and decreasing departure delays
arrange(hflights, UniqueCarrier, desc(DepDelay))
# Arrange flights by total delay (normal order).
arrange(hflights, DepDelay + ArrDelay)
# Keep flights leaving to DFW before 8am and arrange according to decreasing AirTime
arrange(filter(hflights, Dest == 'DFW', DepTime < 800), desc(AirTime))
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