Spreads and Mid Quotes
Compute spreads and midquotes from price streams.
spreads(x, which = c("Bid", "Ask"), tickSize = NULL) midquotes(x, which = c("Bid", "Ask"))midquoteSeries(...) spreadSeries(...)
the default is NULL to simply compute price changes in original
price levels. If ticksize is supplied, the price changes will be
divided by the value of
inTicksOfSizeto compute price changes in ticks.
a vector with two character strings naming the column names of
the time series from which to compute the mid quotes and spreads.
By default these are bid and ask prices with column names
an object of class
- arguments to be passed.
- all functions return an object of class
spreadSeries are synonymes
## Load the Microsoft Data - setRmetricsOptions(myFinCenter = "GMT") data(MSFT) X = MSFT[1:10, ] head(X) ## Compute Open/Close Midquotes - X.MID <- midquotes(X, which = c("Close", "Open")) colnames(X.MID) <- "X.MID" X.MID ## Compute Open/Close Spreads - X.SPREAD <- spreads(X, which = c("Close", "Open")) colnames(X.SPREAD) <- "X.SPREAD" X.SPREAD
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