TAQ-functions: TAQ Manager
In TAQMNGR: Manage Tick-by-Tick Transaction Data

Description Usage Arguments Details References Examples

Manage tick-by-tick transaction data

  
  TAQ.CleanTickByTick(dirInput, dirOutput, 
  
    window = 80, deltaTrimmed = 0.10, granularity = 0.04, useCleaned = TRUE)
  
  TAQ.Aggregate(dirInput, symbol, bin, useAggregated = TRUE)
  
  TAQ.Report(dirInput, symbol)

  TAQ.Read(dirInput, symbol, import = NULL, startDate, endDate, bin)

`dirInput`	A character scalar: the input directory. For the function `CleanTickByTick()`, `dirInput` is the name of the folder containing the raw data files. In this case it is important that `dirInput` includes only `.gz` files to be cleaned. For the remaining functions, `dirInput` is the name of the folder including the previously cleaned/aggregated data (appearing as `dirOutput` in the function `CleanTickByTick()`).
`dirOutput`	A character scalar: the output directory. It must be different from `dirInput`.
`window`	A numeric integer scalar: the window size for the trimming procedure of data clean (see Details).
`deltaTrimmed`	A numeric scalar into $(0,1)$: the trimming proportion (see Details).
`granularity`	A numeric positive scalar: the granularity parameter (see Details).
`useCleaned`	A logical scalar: if `TRUE`, previously cleaned files (if any) are not cleaned again.
`useAggregated`	A logical scalar: if `TRUE`, previously aggregated data (if any) are not aggregated again.
`symbol`	A character (vector in `TAQ.Aggregate()`; scalar in `TAQ.Report()` and `TAQ.Read()`): the ticker symbols of interest.
`startDate`	A numeric integer scalar: the start date in the yyyymmdd format.
`endDate`	A numeric integer scalar: the end date in the yyyymmdd format.
`bin`	A numeric integer scalar: the bin size (in seconds) for aggregating data.
`import`	A character: the list of fields to be imported. One or more among: `"FIRST"`: First price in the bin. `"MIN"`: Min price in the bin. `"MAX"`: Max price in the bin. `"LAST"`: Last price in the bin. `"SIZE"`: First price in the bin. `"#TRADES"`: Number of trades in the bin. `"VWAP"`: Volume Weighted Average Price in the bin. If `NULL`, all fields are imported.

The meaning of the arguments window, deltaTrimmed, and granularity is detailed in the reference below.

Brownlees, C. T., and Gallo, G. M. (2006). Financial Econometric Analysis at Ultra–High Frequency: Data Handling Concerns, Computational Statistics and Data Analysis 51, 2232–2245.

  #### A fake dataset for running the example can be downloaded at 
  #### 'http://local.disia.unifi.it/cipollini/webpage-new/data/data_sample.txt.gz' 
  ## Input
  # dirInput  <- "path of the input folder" 
  # dirOutput <- "path of the output folder" ## Must be different from 'dirInput' 
  ## Clean
  # TAQ.CleanTickByTick(dirInput = dirInput, dirOutput = dirInput)
  ## Make the report (1 at a time)
  # TAQ.Report(dirInput = dirOutput, symbol = c("DOG")) ## A scalar symbol
  # TAQ.Report(dirInput = dirOutput, symbol = c("GNU")) ## A scalar symbol
  ## Aggregate
  # TAQ.Aggregate(dirInput = dirOutput, symbol = c("DOG", "GNU"), bin = 300, 
  #   useAggregated = TRUE)
  ## Import data
  # dog <- TAQ.Read(dirInput = dirOutput, symbol = "DOG", 
  #   startDate = 00010101, endDate = 20141231, bin = 300)