The highfrequency package provides numerous tools for analyzing high-frequency financial data, including functionality to:
Clean, handle, and manage high frequency trades and quotes data.
Calculate liquidity measures
Calculate (multivariate) realized measures of the distribution of high-frequency returns
Estimate models for realized measures of volatility and the corresponding forecasts
Detect jumps in prices
Analyze market microstructure noise in asset prices
Estimate spot volatility and drift as well as analyze intraday periodicity of spot volatility
Useful links: