a zoo/xts object containing all returns in period t for one asset.
align.by
a string, align the tick data to "seconds"|"minutes"|"hours".
align.period
an integer, align the tick data to this many [seconds|minutes|hours].
makeReturns
boolean, should be TRUE when rdata contains prices instead of returns. FALSE by default.
Value
numeric
References
Andersen, T. G., D. Dobrev, and E. Schaumburg (2012). Jump-robust volatility estimation using nearest neighbor truncation. Journal of Econometrics, 169 (1), 75-93.