date and time data types and tools converting between string and datetime time series basics indexingselectionsubsetting time series with duplicate indices date rangesfrequenciesand shifting generating date ranges frequencies and date offsets shifting (leading and laggingdata time zone handling localization and conversion operations with time zone-aware timestamp objects operations between different time zones periods and period arithmetic period frequency conversion quarterly period frequencies converting timestamps to periods (and backcreating periodindex from arrays resampling and frequency conversion downsampling upsampling and interpolation resampling with periods time series plotting moving window functions exponentially-weighted functions binary moving window functions user-defined moving window functions performance and memory usage notes financial and economic data applications data munging topics time series and cross-section alignment operations with time series of different frequencies time of day and "as ofdata selection splicing together data sources return indexes and cumulative returns group transforms and analysis group factor exposures decile and quartile analysis more example applications signal frontier analysis future contract rolling viii table of contents www it-ebooks info