seriesMerge
Merging for Time Series and Signals
Description
Merges time series or signal objects,
making a new object with all the columns of
the input objects, and some or all of the rows, depending on how their
positions match.
Usage
seriesMerge(x1, x2, ..., pos=positions(x1), how,
error.how, localzone=FALSE, matchtol=0,
suffixes)
Arguments
| x1 |
the first object to be merged.
|
| x2 |
the second object to be merged.
|
| ... |
the other objects to be merged.
|
| pos |
the positions to align to, or "union" to make a union of all input positions.
(The default argument values give an intersection of all the positions.)
|
| how |
after the positions to align to are determined, how determines
how to treat positions that are missing from the various input objects.
Can be one of the following:
|
"NA" | Inserts a row of NA. | |
"drop" | Drops that position entirely. | |
"nearest" | Uses the row with the nearest position. | |
"before" | Uses the data from the row whose position
is just before the unmatched position. | |
"after" | Uses the data from the row whose position is
just after the unmatched position. | |
"interp" | Interpolates linearly between "before" and "after".
|
The default is "drop" unless pos="union",
in which case "drop" makes no sense and the default is "NA".
|
| error.how |
specifies what to do in the event of an out of bounds error, which can
occur when how is "before", "after", or "interp".
Can be one of the following: |
"NA" | Inserts a row of NA | |
"drop" | Drops that position entirely | |
"nearest" | Uses the row with the nearest position. | |
|
The default is "drop" unless pos="union",
in which case "drop" makes no sense and the default is "NA".
|
| localzone |
if TRUE (that is, all input positions must be calendar-based),
merge by matching/interpolating with all positions
in their local time zones, instead of with the absolute GMT times.
|
| matchtol |
the tolerance for matching positions. Positions that match within matchtol do
not invoke how argument methods.
|
| suffixes |
the suffixes to append to the column names that are duplicated between
the various input data objects. The default value is
paste(".", 1:nargs, sep = ""),
where nargs is the total number of data arguments.
|
Value
returns a new series object containing all the columns of all the inputs, and
all the rows of all the inputs, according to the alignment methods described above.
See Also
Examples
a <- signalSeries(pos=1:10, data=data.frame(a = 11:20, b = 5 * (1:10)))
b <- signalSeries(pos=5:14, data=data.frame(a = 11:20, b = 5 * (1:10)))
seriesMerge(a, b)
a <- timeSeries(pos=as(1:10, "timeDate"),
data=data.frame(a = 11:20, b = 5 * (1:10)))
b <- timeSeries(pos=as(5:14, "timeDate"),
data=data.frame(a = 11:20, b = 5 * (1:10)))
seriesMerge(a, b, pos="union")