agg_ohlc: Aggregate a time series of data into a single bar of _OHLC_...
| agg_ohlc | R Documentation |
Aggregate a time series of data into a single bar of OHLC data.
Description
Aggregate a time series of data into a single bar of OHLC data.
Usage
agg_ohlc(tseries)
Arguments
tseries |
A time series or a matrix with multiple columns of data. |
Details
The function agg_ohlc() aggregates a time series of data into a
single bar of OHLC data. It can accept either a single column of
data or four columns of OHLC data.
It can also accept an additional column containing the trading volume.
The function agg_ohlc() calculates the open value as equal to
the open value of the first row of tseries.
The high value as the maximum of the high column of
tseries.
The low value as the minimum of the low column of
tseries.
The close value as the close of the last row of
tseries.
The volume value as the sum of the volume column of
tseries.
For a single column of data, the open, high, low, and close values are all the same.
Value
A matrix containing a single row, with the open,
high, low, and close values, and also the total
volume (if provided as either the second or fifth column of
tseries).
Examples
## Not run:
# Define matrix of OHLC data
ohlc <- coredata(rutils::etfenv$VTI[, 1:5])
# Aggregate to single row matrix
ohlcagg <- HighFreq::agg_ohlc(ohlc)
# Compare with calculation in R
all.equal(drop(ohlcagg),
c(ohlc[1, 1], max(ohlc[, 2]), min(ohlc[, 3]), ohlc[NROW(ohlc), 4], sum(ohlc[, 5])),
check.attributes=FALSE)
## End(Not run)
